Lucent Technologies Modem Host Based Controller Modem AT User Manual

Data Addendum  
June 15, 1998  
Version 1.1  
Host-Based Controller Modem AT Command Set  
Contents  
Page  
Introduction  
AT Command Summary ........................................2  
AT Commands Reference .....................................6  
Test and Debug AT Commands ..........................24  
AT Commands Reference S-Registers ...............29  
AT FAX Command Set (Class 1 FAX)..................36  
AT FAX Commands Reference............................37  
AT Voice Command Set.......................................42  
AT Voice Commands Reference .........................43  
AT COMMANDS: SPEAKERPHONE OPERATION.........45  
AT COMMANDS: TELEPHONE ANSWERING DEVICE...45  
AT VOICE COMMAND SET NOT DEFINED IN IS-101  
This document specifies the Lucent Technologies  
MTC AT Command Set for the host-based controller  
modem products. Note that if a particular modem  
board does not support a feature (such as voice),  
then the corresponding commands are disabled for  
that modem.  
SPECIFICATIONS...................................................48  
VOICE MODEM COMMAND EXAMPLES .....................49  
AT DSVD Commands...........................................56  
V.25ter AT Commands.........................................57  
V.80 AT Commands .............................................59  
AT Commands for Homologation Testing and  
Debugging............................................................61  
CONFIGURING FOR DIFFERENT COUNTRIES .............63  
COUNTRY SPECIFIC HOMOLOGATION PARAMETERS .69  
COUNTRY SPECIFIC S REGISTER DEFAULTS............84  
CHANGING THE DTMF DIAL SPEED DEFAULT VALUE86  
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Command Summary (continued)  
Table 2. AT Testing and Debugging Command Set Summary  
Command Description  
Command  
Description  
&&C  
&&L  
&&R  
&&S  
Write to/read from host interface  
%T94  
%T124  
%T125  
#UD  
Test external DSP RAM  
Return to on-chip DSP RAM  
Load K56flex image to external DSP RAM  
Unimodem diagnostics  
Line-to-line loopback  
Write to/read from DSP RAM location  
Speaker codec loopback  
Table 3. The S-Register Summary  
Register Default  
Description  
S0  
0
Automatic answer ring number  
Ring counter  
S1  
0
S2  
43  
13  
10  
8
AT escape character  
S3  
Command line termination character  
Response formatting character  
Command line editing character  
Wait before dialing  
S4  
S5  
S6  
2
S7  
50  
2
Connection completion time-out  
Comma dial modifier time  
Automatic disconnect delay  
DTMF dialing speed  
S8  
S10  
S11  
S12  
S14  
S21  
S22  
S24  
S28  
S30  
S32  
S33  
S35  
S36  
S37  
S38  
S42*  
S43*  
S48  
S89  
S90  
S91  
S108  
20  
95  
50  
8
Escape guard time  
General bit-mapped options status  
V.24 bit-mapped options status  
Results bit-mapped options status  
Timer to control sleep mode  
V.34 modulation enable/disable  
Inactivity timer  
48  
112  
10  
1
0
16  
0
Synthetic ring volume  
Synthetic ring frequency  
Data calling tone  
0
7
Negotiation fallback  
0
Dial line rate  
1
Enable/disable K56flex settings  
Auto rate  
1
1
Auto mode  
7
LAPM error control and feature negotiation  
Timer to control sleep mode  
Local phone status  
10  
10  
15  
7
Line transmit level  
Network codec type  
* S-registers 42, and 43 are for test and debugging purposes only.  
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Host-Based Controller Modem  
AT Command Set  
1998  
Data Addendum  
June 15,  
AT Command Summary (continued)  
Table 4. The Result Code Summary  
Result Code  
OK  
Numeric  
Description  
0
1
2
3
Command executed  
CONNECT  
RING  
Modem connected to line  
A ring signal has been detected  
NO CARRIER  
Modem lost carrier signal, or does not detect carrier signal, or does  
not detect answer tone  
ERROR  
4
Invalid command  
CONNECT 1200 EC*  
NO DIALTONE  
5
Connection at 1200 bit/s  
No dial tone detected  
Busy signal detected  
6
BUSY  
7
NO ANSWER  
8
Remote end never answered  
Connection at 2400 bit/s  
Connection at 4800 bit/s  
Connection at 9600 bit/s  
CONNECT 2400 EC*  
CONNECT 4800 EC*  
CONNECT 9600 EC*  
CONNECT 14400 EC*  
CONNECT 19200 EC*  
CONNECT 7200 EC*  
CONNECT 12000 EC*  
CONNECT 16800 EC*  
CONNECT 300 EC*  
CONNECT 21600 EC*  
CONNECT 24000 EC*  
CONNECT 26400 EC*  
CONNECT 28800 EC*  
CONNECT 31200 EC*  
CONNECT 33600 EC*  
CONNECT 38400 EC*  
CONNECT 57600 EC*  
CONNECT 115200 EC*  
DELAYED  
10  
11  
12  
13  
14  
24  
25  
86  
40  
55  
56  
57  
58  
59  
60  
28  
18  
87  
88  
89  
90  
70  
71  
72  
73  
74  
75  
76  
77  
78  
79  
80  
81  
82  
100  
Connection at 14400 bit/s  
Connection at 19200 bit/s  
Connection at 7200 bit/s  
Connection at 12000 bit/s  
Connection at 16800 bit/s  
Connection at 300 bit/s  
Connection at 21600 bit/s  
Connection at 24000 bit/s  
Connection at 26400 bit/s  
Connection at 28800 bit/s  
Connection at 31200 bit/s  
Connection at 33600 bit/s  
Connection at 38400 bit/s (DTE rate)  
Connection at 57600 bit/s (DTE rate)  
Connection at 115200 bit/s (DTE rate)  
Delay is in effect for the dialed number  
Dialed number is blacklisted  
BLACKLISTED  
BLACKLIST FULL  
Blacklist is full  
CONNECT 32000 EC*  
CONNECT 34000 EC*  
CONNECT 36000 EC*  
CONNECT 38000 EC*  
CONNECT 40000 EC*  
CONNECT 42000 EC*  
CONNECT 44000 EC*  
CONNECT 46000 EC*  
CONNECT 48000 EC*  
CONNECT 50000 EC*  
CONNECT 52000 EC*  
CONNECT 54000 EC*  
CONNECT 56000 EC*  
CONNECT 28000 EC*  
Connection at 32000 bit/s (K56flex mode) or V.90  
Connection at 34000 bit/s (K56flex mode)  
Connection at 36000 bit/s (K56flex mode) or V.90  
Connection at 38000 bit/s (K56flex mode)  
Connection at 40000 bit/s (K56flex mode) or V.90  
Connection at 42000 bit/s (K56flex mode)  
Connection at 44000 bit/s (K56flex mode) or V.90  
Connection at 46000 bit/s (K56flex mode)  
Connection at 48000 bit/s (K56flex mode) or V.90  
Connection at 50000 bit/s (K56flex mode)  
Connection at 52000 bit/s (K56flex mode) or V.90  
Connection at 54000 bit/s (K56flex mode)  
Connection at 56000 bit/s (K56flex mode)  
Connection at 28000 bit/s (V.90 mode)  
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Command Summary (continued)  
Result Code  
Numeric  
101  
102  
103  
104  
105  
106  
107  
108  
109  
110  
111  
112  
113  
114  
Description  
CONNECT 29333 EC*  
CONNECT 30666 EC*  
CONNECT 33333 EC*  
CONNECT 34666 EC*  
CONNECT 37333 EC*  
CONNECT 38666 EC*  
CONNECT 41333 EC*  
CONNECT 42666 EC*  
CONNECT 45333 EC*  
CONNECT 46666 EC*  
CONNECT 49333 EC*  
CONNECT 50666 EC*  
CONNECT 53333 EC*  
CONNECT 54666 EC*  
Connection at 29333 bit/s (V.90 mode)  
Connection at 30666 bit/s (V.90 mode)  
Connection at 33333 bit/s (V.90 mode)  
Connection at 34666 bit/s (V.90 mode)  
Connection at 37333 bit/s (V.90 mode)  
Connection at 38666 bit/s (V.90 mode)  
Connection at 41333 bit/s (V.90 mode)  
Connection at 42666 bit/s (V.90 mode)  
Connection at 45333 bit/s (V.90 mode)  
Connection at 46666 bit/s (V.90 mode)  
Connection at 49333 bit/s (V.90 mode)  
Connection at 50666 bit/s (V.90 mode)  
Connection at 53333 bit/s (V.90 mode)  
Connection at 54666 bits/s (V.90 mode)  
* EC only appears when the extended result codes configuration option is enabled. EC is replaced by one of the following symbols,  
depending upon the error control method used:  
V42bis—V.42 error control and V.42bis data compression.  
V42—V.42 error control only.  
MNP 5—MNP class 4 error control and MNP class 5 data compression.  
MNP 4—MNP class 4 error control only.  
NoEC—No error control protocol.  
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Host-Based Controller Modem  
AT Command Set  
1998  
Data Addendum  
June 15,  
AT Commands Reference  
AT commands are issued to the modem to control the modem's operation and software configuration. AT  
commands can only be entered while the modem is in command mode. The format for entering AT commands is:  
TYPE:  
command.  
ATXn  
where X is the AT command and n is the specific value for that  
PRESS:  
Enter  
If n is omitted from a command that takes a parameter valu, the  
value 0 I(zero)  
is assumed.  
Any command issued is acknowledged with a response in either text or numeric values known as result codes.  
Table 2 lists all the valid result codes.  
In the following listing, all commands and command-values accepted by the modem are shown; any entries other  
than those shown cause the ERROR result code.  
+++ Escape sequence  
The escape sequence allows the modem to exit data mode and enter on-line command mode. While in on-line  
command mode, you may communicate directly to your modem using AT commands. Once you are finished, you  
may return to data mode using the ATO command.  
A pause, the length which is set by the Escape Guard Time (S12), must be used before and after an escape  
sequence is issued. This pause prevents the modem from interpreting the escape sequence as data.  
The value of the escape sequence character may be changed using Register S2.  
A/  
Repeat Last Command  
This command repeats the last command string entered. Do not precede this command with an AT prefix or  
conclude it by pressing Enter.  
A
Answer Command  
This command instructs the modem to go off-hook and answer an incoming call.  
Bn Communication Standard Setting  
This command determines CCITT vs. Bell standard.  
B0:  
B1:  
B2:  
Selects CCITT V.22 mode when the modem is at 1200 bits/s.  
Selects Bell 212A when the modem is at 1200 bits/s (default).  
Unselects V23 reverse channel (same as B3 ).  
B3:  
Unselects V23 reverse channel (same as B2 ).  
B15:  
Selects V.21 when the modem is at 300 bits/s.  
B16:  
Selects Bell 103J when the modem is at 300 bits/s (default).  
Result Codes:  
OK  
n = 0, 1, 2, 3, 15, 16  
Otherwise  
ERROR  
Cn  
Carrier Control  
The modem will accept the C1 command without error in order to assure backward compatibility with  
communications software that issues the C1 command. However, this modem does not support the C0  
command. The C0 command may instruct some other modems not to send carrier (i.e., it puts them in a receive-  
only mode).  
C0:  
C1:  
Transmit carrier always off.  
Normal transmit carrier switching.  
Result Codes:  
OK  
n = 1  
ERROR  
Otherwise  
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Command Reference (continued)  
Dn  
Dial  
This command instructs the modem to begin the dialing sequence. The dial string (n, including modifiers and the  
telephone number) is entered after the ATD command.  
A dial string can be up to 60 characters long. Any digit or symbol (0 9, *, #, A, B, C, D) may be dialed as touch-  
tone digits. Characters such as spaces, hyphens, and parentheses do not count they are ignored by the  
modem and may be included in the dial string to enhance readability.  
The following may be used as dial string modifiers:  
L
P
Redials last number. Should be the first character following ATD, ignored otherwise.  
Pulse dialing.  
T
,
Touch-tone dialing (default).  
Pause during dialing. Pause for time specified in Register S8 before processing the next  
character  
in the dial string.  
W
V
Wait for dial tone. Modem waits for a second dial tone before processing the dial string.  
The modem switches to speakerphone mode and dials the number. An ATH command may be  
used to  
disconnect the voice call.  
@
Wait for quiet answer. Wait for five seconds of silence after dialing the number. If silence is not  
detected, the modem sends a NO ANSWER result code back to the user.  
Hook flash. Causes the modem to go on-hook for 0.5 seconds and then return to off-hook.  
Return to command mode. Causes the modem to return to command mode after dialing the  
!
;
number,  
without disconnecting the call.  
^
Disable data calling tone transmission.  
S=n Dial a telephone number previously stored using the &Zn=x command (see the &Zn=x command for  
further information). The range of n is 0—3.  
$
Bong tone detection  
En  
Echo Command  
This command controls whether or not the characters entered from your computer keyboard are echoed back to  
your monitor while the modem is in command mode.  
E0:  
E1:  
Disables echo to the computer.  
Enables echo to the computer (default).  
Result Codes:  
OK  
n = 0, 1  
ERROR  
Otherwise  
Fn  
Online Data Character Echo Command  
This command determines if the modem will echo data from the DTE. This modem does not support the F0  
version of the command. However, the modem will accept F1, which may be issued by older communication  
software, to assure backward compatibility.  
F0:  
F1:  
Online data character echo enabled (NOT SUPPORTED).  
Online character echo disabled.  
Result Codes:  
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Command Reference (continued)  
OK  
n = 1  
ERROR  
Otherwise  
Hook Control  
Hn  
This command instructs the modem to go on-hook to disconnect a call, or off-hook to make the phone line busy.  
H0:  
H1:  
Modem goes on-hook (default).  
Modem goes off-hook.  
Result Codes:  
OK  
n = 0, 1  
ERROR  
Otherwise  
In  
Request ID Information  
This command displays specific product information about the modem.  
I0:  
I1:  
I2:  
Returns modem identity string and driver version number, same as I3.  
Calculates ROM checksum and displays it on the DTE.  
Performs a ROM check and calculates and verifies the checksum displaying OK or  
ERROR.  
I3:  
I4:  
I5:  
Returns modem identity string and driver version number, same as I0.  
Returns firmware version for data pump.  
Returns the board/firmware ID and country ID in hexadecimal (for Apollo).  
Returns the code ver, board ID, country ID and subsystem vendor ID in hexadecimal (for  
MARS).  
I6-8:  
I9:  
Returns OK for compatibility.  
Returns country ID in English.  
I11:  
Displays connection information as described in the following example.  
Result Codes:  
ERROR  
As described n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11  
Otherwise  
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Command Reference (continued)  
The ATI11 result has two pages; the user must hit a key to get the second page. See the following example:  
ati11  
Description  
---------------  
Last Connection  
K56flex connection  
------------------  
56K  
V.90 Connection  
---------------  
V.90  
1
2
3
4
5
6
7
8
9
Initial Transmit Carrier Rate  
Initial Receive Carrier Rate  
Final Transmit Carrier Rate  
Final Receive Carrier Rate  
Protocol Negotiation Result  
Data Compression Result  
Estimated Noise Level  
28800  
50000  
28800  
50000  
LAPM  
V42bis  
152  
28800  
49333  
28800  
49333  
LAPM  
V42bis  
152  
Receive Signal Power Level (-dBm) 25  
25  
10 Transmit Signal Power Level (-dBm) 16  
11 Round Trip Delay (msec) 4  
Press any key to continue; ESC to quit.  
16  
4
12 Near Echo Level  
13 Far Echo Level  
14 Transmit Frame Count  
(-dBm) NA  
(-dBm) NA  
3
NA  
NA  
3
15 Transmit Frame Error Count  
16 Receive Frame Count  
17 Receive Frame Error Count  
18 Retrain by Local Modem  
19 Retrain by Remote Modem  
20 Call Termination Cause  
21 Robbed-Bit Signaling  
22 Digital Loss  
0
0
0
0
0
0
00  
0
0
0
0
0
0
00  
6
NA  
(dB) 6  
4342C3  
23 Remote Server ID  
OK  
The ATI11 command may be issued from on-line command mode or after the end of a call. After a call, some of  
the values are no longer valid; it's useful to know which ones.  
Each of the line items in the ATI11 result is explained next:  
1. V.90, 56K, V.34, or V.32 depending on the type of connection negotiated.  
2. Initial upstream rate  
3. Initial downstream rate  
4. Current or final upstream rate  
5. Current or final downstream rate  
6. LAPM or MNP or None, depending on V.42 negotiation  
7. V42bis or MNP or None, depending on V.42 negotiation  
8. Mean-square error of received downstream signal. Difference between received constellation point and  
reference decision point. This is a dimensionless decimal number, only valid during a call. Higher numbers  
are worse. There's no absolute threshold of goodness; it depends on the downstream data rate. The number  
varies during a call, so it can be useful to sample it a few times.  
9. The received signal power, although labeled -dBm, is only a relative measure for comparing calls to/from  
different locations. Only valid during a call.  
10. Upstream transmit signal power.  
11. Round-trip delay in milliseconds.  
12. Echo levels are valid for V.34 only.  
13. Echo levels are valid for V.34 only.  
14. Number of LAPM frames sent upstream during this call. Count wraps around at 65535.  
15. Number of REJ frames received at the analog client modem.  
16. Number of LAPM frames received by client during this call. Count wraps around at 65535.  
17. Number of frames received in error by the client.  
18. Number of retrains or rate renegotiations requested by this modem.  
19. Number of retrains or rate renegotiations requested by remote modem.  
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Command Reference (continued)  
20. Reason for call ending, only valid after call ends:  
0 = Local modem command: ATH, DTR drop  
1 = Remote modem: cleardown, loss of signal  
2 = No answer, busy, etc.  
3 = Training failure V.90, K56flex or V.34.  
4 = Protocol failure if required by \N4, for example.  
21. For PCM connection only, a hexadecimal 6-bit pattern of T1 frames with robbed-bit signaling.  
22. For PCM connection only, the downstream digital loss.  
23. For K56flex connection only, the V.8bis info sent by the server. Meaning is defined at the server and by  
convention. Example above is from a recent Ascend MAX in µ-Law.  
Ln  
Monitor Speaker Volume  
This command sets speaker volume to low, medium, or high.  
L0:  
Selects low volume.  
L1:  
Selects low volume.  
L2:  
L3:  
Selects medium volume (default).  
Selects high volume.  
Result Codes:  
OK  
n = 0, 1, 2, 3  
Otherwise  
ERROR  
Mn  
Monitor Speaker Mode  
This command turns the speaker on or off.  
M0:  
M1:  
M2:  
M3:  
The speaker is off.  
The speaker is on until the modem detects the carrier signal (default).  
The speaker is always on when modem is off-hook.  
The speaker is on until the carrier is detected, except while dialing.  
Result Codes:  
OK  
n = 0, 1, 2, 3  
Otherwise  
ERROR  
Nn  
Modulation Handshake  
This command controls whether or not the local modem performs a negotiated handshake at connection time with  
the remote modem when the communication speed of the two modems is different.  
N0:  
When originating or answering, this is for handshake only at the communication standard specified by  
S37 and the ATB command.  
N1:  
When originating or answering, begin the handshake only at the communication standard specified by  
S37 and the ATB command. During handshake, fallback to a lower speed may occur (default).  
Result Codes:  
OK  
n = 0, 1  
Otherwise  
ERROR  
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Host-Based Controller Modem  
AT Command Set  
AT Command Reference (continued)  
On  
Return On-line to Data Mode  
O0:  
Instructs the modem to exit on-line command mode and return to data mode  
(see AT Escape Sequence, +++).  
O1:  
O3:  
This command issues a retrain before returning to on-line data mode.  
This command issues a rate renegotiation before returning to on-line data mode.  
Result Codes:  
OK  
n = 0, 1, 3  
Otherwise  
ERROR  
P
Select Pulse Dialing  
This command configures the modem for pulse (non touch-tone) dialing. Dialed digits are pulsed until a T  
command or dial modifier is received. Tone dial is the default setting.  
Qn  
Result Code Control  
Result codes are informational messages sent from the modem and displayed on your monitor. Basic result  
codes are OK, CONNECT, RING, NO CARRIER, and ERROR. The ATQ command allows the user to turn result  
codes on or off.  
Q0:  
Q1:  
Enables modem to send result codes to the computer (default).  
Disables modem from sending result codes to the computer.  
Result Codes:  
OK  
n = 0, 1  
ERROR  
Otherwise  
T
Select Tone Dialing  
This command instructs the modem to send DTMF tones while dialing. Dialed digits are tone dialed until a P  
command or dial modifier is received. This is the default setting.  
Vn  
DCE Response Format  
This command controls whether result codes (including call progress and negotiation progress messages) are  
displayed as words or their numeric equivalents. For the result code, see table 4.  
V0:  
V1:  
Displays result codes as digits.  
Displays result codes as text (default).  
Result Codes:  
OK  
n = 0, 1  
ERROR  
Otherwise  
ATV0  
Result Code Format <numeric code> <CR>  
ATV1  
<CR> <LF>  
<verbose code> <CR> <LF>  
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Command Reference (continued)  
Wn  
Result Code Option  
W0:  
W1:  
W2:  
CONNECT result code reports DTE receive speed. Disable protocol result codes.  
CONNECT result code reports DTE receive speed. Enable protocol result codes.  
CONNECT result code reports DCE receive speed. Enable protocol result codes (default).  
Result Codes:  
OK  
n = 0, 1, 2  
Otherwise  
ERROR  
Xn  
Result Code Selection and Call Progress Monitoring  
This command enables tone detection options used in the dialing process. As these functions are chosen, the  
modem chip set’s result codes are also affected. Therefore, this command is frequently used to control the  
modem chip set’s responses. The primary function of this control is to control the modem chip set’s call response  
capabilities.  
Ext. Result Code Dial Tone Detect Busy Tone Detect  
X0  
X1  
X2  
X3  
X4  
X5  
X6  
X7  
Disable  
Enable  
Enable  
Enable  
Enable  
Enable  
Enable  
Disable  
Disable  
Disable  
Enable  
Disable  
Enable  
Enable  
Enable  
Enable  
Disable  
Disable  
Disable  
Enable  
Enable (default)  
Enable  
Enable  
Enable  
Extended Result Codes  
Disabled:  
Enabled:  
Displays only the basic result codes OK, CONNECT, RING, NO CARRIER, and ERROR.  
Displays basic result codes, along with the connect message and the modem's date rate,  
and an indication of the modem's error correction and data compression operation.  
Dial Tone Detect  
Disabled:  
The modem dials a call regardless of whether it detects a dial tone. The period of time  
the modem waits before dialing is specified in register S6.  
Enabled:  
The modem dials only upon detection of a dial tone, and disconnects the call if the dial  
tone is not detected within 10 seconds.  
Busy Tone Detect  
Disabled:  
Enabled:  
The modem ignores any busy tones it receives.  
The modem monitors for busy tones.  
Result Codes:  
OK  
ERROR  
n = 0, 1, 2, 3, 4, 5, 6, 7  
Otherwise  
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Host-Based Controller Modem  
AT Command Set  
AT Command Reference (continued)  
Yn  
Long Space Disconnect  
Long space disconnect is always disabled.  
Y0:  
Y1:  
Disable long space disconnect (default).  
Enable long space disconnect (NOT SUPPORTED).  
Result Codes:  
OK  
n = 0  
Otherwise  
ERROR  
Zn  
Recall Stored Profile  
This command instructs the modem chip set to go on-hook and restore the profile saved by the last &W  
command. Either Z0 or Z1 restores the same single profile.  
Result Codes:  
OK  
ERROR  
n = 0, 1  
Otherwise  
&Bn  
V.32 Auto Retrain  
This modem always auto retrains.  
&B0: Disable V.32 auto retrain (NOT SUPPORTED).  
&B1: Enable V.32 auto retrain (default).  
Result Codes:  
OK  
ERROR  
n = 1  
Otherwise  
&Cn  
Data Carrier Detect (DCD) Control  
Data Carrier Detect is a signal from the modem to your computer indicating that the carrier signal is being  
received from a remote modem. DCD normally turns off when the modem no longer detects the carrier signal.  
&C0: The state of the carrier from the remote modem is ignored. DCD circuit is always on.  
&C1: DCD turns on when the remote modem's carrier signal is detected, and off when the carrier signal  
is not detected (default).  
Result Codes:  
OK  
ERROR  
n = 0, 1  
Otherwise  
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Command Reference (continued)  
&Dn  
DTR Control  
This command interprets how the modem responds to the state of the DTR signal and changes to the DTR signal.  
&D0: Ignore. The modem ignores the true status of DTR and treats it as always on. This should only  
be  
used if your computer does not provide DTR to the modem.  
&D1: If the DTR signal is not detected while in on-line data mode, the modem enters command mode,  
issues OK result code, and remains connected.  
&D2: If the DTR signal is not detected while in on-line data mode, the modem disconnects (default).  
&D3: Reset modem on the on-to-off DTR transition.  
Result Codes:  
OK  
ERROR  
n = 0, 1, 2, 3  
Otherwise  
&Fn  
Load Factory Settings  
This command loads the configuration stored and programmed at the factory. This operation replaces all of the  
command options and the S-register settings in the active configuration with factory default values.  
Note: In voice mode (AT+FCLASS=8), if the AT&F command is placed on the same line as other commands, the  
command line is ignored. To load factory settings in voice mode, issue AT&F by itself.  
Result Codes:  
OK  
n = 0  
ERROR  
Otherwise  
&Gn V.22bis Guard Tone Control  
This command determines which guard tone, if any, to transmit while transmitting in the high band (answer  
mode). This command is only used in V.22 and V.22bis mode. This option is not used in North America and is for  
international use only.  
&G0: Guard tone disabled (default).  
&G1: Sets guard tone to 550 Hz.  
&G2: Sets guard tone to 1800 Hz.  
Result Codes:  
OK  
ERROR  
n = 0, 1, 2  
Otherwise  
&Jn  
Auxiliary Relay option  
&J0:  
&J1:  
The auxiliary relay is never closed. (Default)  
NOT SUPPORTED  
Result Codes:  
OK  
n = 0  
ERROR  
Otherwise  
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Host-Based Controller Modem  
AT Command Set  
AT Command Reference (continued)  
&Kn  
Local Flow Control Selection  
&K0: Disable flow control  
&K1: Reserved  
&K2: Reserved  
&K3: Enable RTS/CTS (hardware) flow control (default)  
&K4: Enable XON/XOFF flow control  
Result Codes:  
OK  
n = 0, 3, 4  
Otherwise  
ERROR  
&Mn  
&M0:  
Asynchronous Communications Mode  
Asynchronous mode (default).  
Reserved  
Reserved  
Reserved  
Reserved  
&M1:  
&M2:  
&M3:  
&M4:  
Result Codes:  
OK  
n = 0  
ERROR  
Otherwise  
&Pn  
Pulse Dial Make-to-Break Ratio Selection  
This Command is effective only for Japan.  
&P0  
&P1  
&P2  
39/61 make/break ratio, 10PPS  
33/67 make/break ratio, 10PPS (default)  
33/67 make/break ratio, 20PPS  
Result Codes:  
OK  
n = 0, 1, 2  
Otherwise  
ERROR  
&Qn Asynchronous Communications Mode  
&Q0:  
&Q5:  
&Q6:  
&Q8:  
Asynchronous Mode, buffered. Same as \N0.  
Error Control Mode, buffered (default). Same as \N3.  
Asynchronous Mode, buffered. Same as \N0.  
MNP error control mode. If an MNP error control protocol is not established, the modem will  
fallback according to the current user setting in S36.  
&Q9:  
V.42 or MNP error control mode. If neither error control protocol is established, the modem will  
fallback according to the current user setting in S36.  
Result Codes:  
OK  
n = 0, 5, 6, 8, 9  
Otherwise  
ERROR  
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Command Reference (continued)  
&Sn  
Data Set Ready (DSR) Option  
This command selects DSR action.  
&S0:  
&S1:  
DSR always ON (default).  
DSR comes on when establishing a connection and goes off when the connection ends.  
Result Codes:  
OK  
n = 0, 1  
ERROR  
Otherwise  
&Tn  
Self-Test Commands  
This command allows the user to perform diagnostic tests on the modem. These tests can help to isolate  
problems when experiencing periodic data loss or random errors.  
&T0  
&T1  
Abort. Stops any test in progress.  
Local analog loop. This test verifies modem operation, as well as the connection  
between the modem and computer. Any data entered at the local DTE is modulated, then  
demodulated, and returned to the local DTE. To work properly, the modem must be off-line.  
&T3 Local digital loopback test.  
&T6 Remote digital loopback test. This test can verify the integrity of the local modem, the communications  
link, and the remote modem. Any data entered at the local DTE is sent to, and returned from, the  
remote modem. To work properly, the modems must be on-line with error control disabled.  
Result Codes:  
OK  
n = 0  
CONNECT  
ERROR  
n = 1, 3, 6  
Otherwise  
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Host-Based Controller Modem  
AT Command Set  
AT Command Reference (continued)  
&V  
View Active Configuration and Stored Profile  
This command is used to display the active profiles.  
For example:  
Option  
Selection  
AT Cmd  
Comm Standard  
CommandCharEcho  
Speaker Volume  
Speaker Control  
Bell  
Enabled  
Medium  
OnUntilCarrier  
Enabled  
B
E
L
M
Q
Result Codes  
Dialer Type  
Tone  
Text  
Enabled  
Enabled  
Enabled  
Standard RS232  
Standard RS232  
T/P  
V
X
X
X
&C  
&D  
ResultCode Form  
ExtendResultCode  
Dial Tone Detect  
Busy Tone Detect  
LSD Action  
DTR Action  
Press any key to continue; ESC to quit.  
Option  
Selection  
AT Cmd  
V22b Guard Tone  
Flow Control  
Disabled  
Hardware  
V42, MNP, Buffer  
Enabled  
0
43  
13  
10  
8
&G  
&K  
\N  
Error Control Mode  
Data Compression  
AutoAnswerRing#  
AT Escape Char  
CarriageReturnChar  
Linefeed Char  
Backspace Char  
Blind Dial Pause  
NoAnswer Timeout  
“ , “ Pause Time  
%C  
S0  
S2  
S3  
S4  
S5  
S6  
S7  
S8  
2 sec  
50 sec  
2 sec  
Press any key to continue; ESC to quit.  
Option  
Selection  
AT Cmd  
No Carrier Disc  
DTMF Dial Speed  
Escape GuardTime  
Data Calling Tone  
Line Rate  
2000 msec  
95 msec  
1000 msec  
Disabled  
33600  
S10  
S11  
S12  
S35  
S37  
-SSE  
DSVD mode  
Disabled  
Stored Phone Numbers  
&Z0=  
&Z1=  
&Z2=  
&Z3=  
OK  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Command Reference (continued)  
&Wn  
Store Current Configuration  
This command stores certain command options and S-register values except S3, S4, and S5. The ATZ command  
or a power-up reset of the modem restores this profile.  
Result Codes:  
OK  
n = 0  
ERROR  
Otherwise  
&Yn  
Select Stored Profile for Hard Reset  
This command does not change the behavior of the modem but is included for compatibility with applications that  
issue the &Y0 command  
&Y0:  
&Y1:  
Select stored profile 0 on power-up  
ERROR  
Result Codes:  
OK  
n = 0  
ERROR  
Otherwise  
&Zn=x  
Store Telephone Number  
This command is used to store up to four dialing strings for later dialing. The format for the command is &Zn =  
”stored number” where n is the location 0—3 to which the number should be written. The dial string may contain  
up to 40 characters. The ATDS = n command dials using the string stored in location n.  
Result Codes:  
OK  
ERROR  
n = 0, 1, 2, 3  
Otherwise  
\An  
Select Maximum MNP Block Size  
The modem will operate an MNP error corrected link using a maximum block size controlled by the parameter  
supplied.  
\A0:  
\A1:  
\A2:  
\A3:  
64 characters.  
128 characters.  
192 characters.  
256 characters (default).  
Result Codes:  
OK  
n = 0, 1, 2, 3  
Otherwise  
ERROR  
\Bn  
Transmit Break to Remote  
In non-error-control mode, the modem will transmit a break signal to the remote modem with a length in multiples  
of 100ms according to parameter specified. The command works in conjunction with the \K command.  
\B1 - \B9:  
Result Codes:  
OK  
Break length in 100ms units. (Default = 3.) (Non-error-control mode only.)  
If connected in data modem mode.  
NO CARRIER  
If not connected or connected in fax modem mode.  
\G  
Modem Port Flow Control  
\G0:  
\G1:  
Modem process XON/XOFF flow control characters locally (default).  
Modem passes XON/XOFF flow control characters.  
Result Codes:  
OK  
n = 0, 1  
ERROR  
Otherwise  
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Host-Based Controller Modem  
AT Command Set  
AT Command Reference (continued)  
\J  
Bits/s Rate Adjusted  
This command determines whether or not the negotiated connect speed of the modem forces the adjustment of  
the speed of the DTE to the modem’s speed.  
\J0:  
\J1:  
Buffer mode. Error control selected (or not) by \Nn command (default).  
Force the max DCE rate to the DTE rate.  
Result Codes:  
OK  
n = 0 or 1  
Otherwise  
ERROR  
\Kn  
Break Control  
Controls the response of the modem to a break received from the DTE or the remote modem or the \B command.  
The response is different in three separate cases.  
The first case is where the modem receives a break from the DTE when the modem is operating in data transfer  
mode:  
\K0:  
\K1:  
\K2:  
\K3:  
\K4:  
\K5:  
Enter on-line command mode, no break sent to the remote modem.  
Clear data buffers and send break to remote modem.  
Same as 0.  
Send break to remote modem immediately.  
Same as 0.  
Send break to remote modem in sequence with transmitted data. (Default.)  
The second case is where the modem is in the on-line command state (waiting for AT commands) during a data  
connection, and the \B is received in order to send a break to the remote modem:  
\K0:  
\K1:  
\K2:  
\K3:  
\K4:  
\K5:  
Clear data buffers and send break to remote modem.  
Clear data buffers and send break to remote modem. (Same as 0.)  
Send break to remote modem immediately.  
Send break to remote modem immediately. (Same as 2.)  
Send break to remote modem in sequence with data.  
Send break to remote modem in sequence with data. (Same as 4.) (Default.)  
The third case is where there a break is received from a remote modem during a connection:  
\K0:  
\K1:  
\K2:  
\K3:  
\K4:  
\K5:  
Clear data buffers and send break to the DTE.  
Clear data buffers and send break to the DTE. (Same as 0.)  
Send a break immediately to DTE.  
Send a break immediately to DTE. (Same as 2.)  
Send a break in sequence with received data to DTE.  
Send a break in sequence with received data to DTE. (Same as 4.) (Default.)  
Result Codes:  
OK  
ERROR  
n = 0,1, 2, 3, 4, 5  
Otherwise  
\Nn  
Error Control Mode Selection  
This command determines the type of error control used by the modem when sending or receiving data.  
\N0:  
\N1:  
\N2:  
Buffer mode. No error control (same as &Q6).  
Direct mode.  
MNP* or disconnect mode. The modem attempts to connect using MNP 2 4 error control  
procedures. If this fails, the modem disconnects. This is also known as MNP reliable  
mode.  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Command Reference (continued)  
\N3:  
V.42, MNP, or buffer (default).  
The modem attempts to connect in V.42 error control mode. If this fails, the modem attempts to  
connect in MNP mode. If this fails, the modem connects in buffer mode and continues  
operation. This  
is also known as V.42/MNP auto reliable mode (same as &Q5).  
\N4:  
V.42 or disconnect. The modem attempts to connect in V.42 error control mode. If this fails, the  
call  
will be disconnected.  
\N5:  
\N7:  
V.42. MNP or buffer (same as \N3).  
V.42. MNP or buffer (same as \N3).  
Result Codes:  
OK  
n = 0, 1, 2, 3, 4,5,7  
Otherwise  
ERROR  
\Q  
Local Flow Control Selection  
\Q0:  
\Q1:  
\Q2:  
\Q3:  
Disable flow control. Same as &K0.  
XON/XOFF software flow control. Same as &K4.  
CTS-only flow control. This is not supported and the response is ERROR.  
RTS/CTS to DTE (default). Same as &K3.  
Result Codes:  
OK  
n = 0, 1, 3  
Otherwise  
ERROR  
\Rn  
Ring indicator signal off after the telephone call is answered (Compatibility command)  
\R0:  
ring indicator signal is off after the telephone call is answered  
Result Codes:  
OK  
n = 0  
ERROR  
Otherwise  
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Host-Based Controller Modem  
AT Command Set  
AT Command Reference (continued)  
\Tn  
Inactivity Timer  
This command specifies the length of time (in minutes) that the modem will wait before disconnecting when no  
data is sent or received. A setting of zero disables the timer. Alternatively, this timer may be specified in register  
S30. This function is only applicable to buffer mode.  
\T0:  
Inactivity timer disabled (default).  
Result Codes:  
OK  
n = 0 - 255  
Otherwise  
ERROR  
\Vn  
Protocol Result Code  
\V0:  
\V1:  
\V2:  
Disable protocol result code appended to DCE speed.  
Enable protocol result code appended to DCE speed (default).  
Same as \V1.  
Result Codes:  
OK  
n = 0, 1  
ERROR  
Otherwise  
\Xn  
XON/XOFF Pass Through  
\X0:  
\X1  
Modem process XON/XOFF flow control characters locally (default).  
Modem passes XON/XOFF flow control characters.  
Result Codes:  
OK  
n = 0, 1  
ERROR  
Otherwise  
-Cn  
Data Calling Tone  
Data Calling Tone is a tone of certain frequency and cadence as specified in V.25 which allows remote  
Data/FAX/Voice discrimination. The frequency is 1300 Hz with a cadence of .5 s on and 2 s off.  
-C0:  
-C1:  
Disabled (default).  
Enabled.  
Result Codes:  
OK  
n = 0, 1  
ERROR  
Otherwise  
-V90 = <n>  
command to enable/disable V.90 and change downstream rate  
-V90=0 will disable V.90  
-V90=1 will enable V.90 Auto Rate (default value)  
-V90=X - controls the downstream rate  
-V90? - Shows the current value  
-V90=? - Shows the range [0-21]  
See next page for the values of n.  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Command Reference (continued)  
The table below shows the possible values:  
“AT-V90=X”  
0
1
2
3
4
5
6
Downstream Rate  
V.90 disabled  
Auto Rate (default)  
28000 kbit/s  
29333 kbit/s  
30666 kbit/s  
32000 kbit/s  
33333 kbit/s  
34666 kbit/s  
36000 kbit/s  
37333 kbit/s  
38666 kbit/s  
40000 kbit/s  
41333 kbit/s  
42666 kbit/s  
44000 kbit/s  
45333 kbit/s  
46666 kbit/s  
48000 kbit/s  
49333 kbit/s  
50666 kbit/s  
52000 kbit/s  
53333 kbit/s  
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
%B  
View Numbers in Blacklist  
If blacklisting is in effect, this command displays the numbers for which the last call attempted in the past two  
hours failed. The ERROR result code appears in countries that do not require blacklisting.  
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Host-Based Controller Modem  
AT Command Set  
AT Command Reference (continued)  
%Cn Data Compression Control  
This command determines the operation of V.42bis and MNP class 5 data compression. Online changes do not  
take effect until a disconnect occurs first.  
%C0: V.42bis/MNP 5 disabled. No data compression.  
%C1: V.42bis/MNP 5 enabled. Data compression enabled (default).  
Result Codes:  
OK  
n = 0, 1  
ERROR  
Otherwise  
%En Enable/Disable Auto-Retrain and Fallback/Fall Forward  
Provides option for the modem to automatically monitor line quality to fall back when line quality is insufficient and  
to fall forward when line quality is sufficient.  
%E0:  
%E1:  
%E2:  
Disable fallback/fall forward  
Enable fallback, Disable fall forward  
Enable fallback/fall forward (Default)  
Result Codes:  
OK  
n = 0,1, 2  
ERROR  
Otherwise  
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Host-Based Modem  
AT Command Set  
1998  
Data Addendum  
June 15,  
Test and Debug AT Commands  
The following commands are to be used for testing and debugging only and are not meant for general use.  
&&C  
Write to / Read from DSP Register  
AT&&C<loc>,<val> writes the value <val> to DSP register at location <loc>.  
AT&&C<loc> reads from location <loc>.  
&&L  
&&R  
Line-to-Line Loopback  
This command provides a loopback for line-to-line.  
Write to/Read from DSP RAM Location  
AT&&R<loc>,<val> writes the value <val> to DSP RAM location <loc>.  
AT&&R<loc> reads from location <loc>.  
&&S  
Speaker Codec Loopback  
This command provides a loopback from the microphone to the speaker.  
%T94 Test External RAM  
This command “AT%T94” is used for testing the external RAM. If the external RAM is good, this command returns  
“PASS”. If the external ram is not good, this command returns “FAIL”.  
Example :  
AT%T94  
PASS  
- external ram is good  
%T125, %T124  
Test DSP 56K Version in External Ram  
The command “AT%T125” is used for testing the DSP 56K code version and checksum running in external ram.  
After issuing “AT%T125” the user may then issue “ATI4” to get DSP Version or “ATI1” to get the DSP checksum.  
(The command “AT%T125” is not valid for ramless version of the DSP 56K code.)  
The command “AT%124” is for internal ram version.  
#UD  
Unimodem Diagnostics  
The reference for the #UD command is Microsoft’s Draft Reference Specification rev.0.85. The Lucent  
Technologies modem implements a subset of the parameters in that document.  
#UD is an action command. It does not take parameters. It shall be the last command in the command line.  
The modem logs aspects of its operation for each call, and saves these results (in volatile memory) until cleared  
by one of the following events:  
1. Power off (or D1 or D3 state entered)  
2. Hard reset (e.g. negate DTR with &D3 set, reset button)  
3. Soft reset = ATZ or AT&F  
4. ATD command issued  
5. ATA command issued  
6. Automatic answer (e.g. set register S0>0 and ring detected)  
These results are NOT cleared by changing DTR, V.24 circuit 108.2, if &D0, &D1 or &D2.  
In response to this command, the modem reports one or more lines of information text as defined below.  
Information text format is defined in ITU V.25ter: each line is preceded by a <CR><LF> pair, and terminated by  
<CR><LF>. (Note: as per V.25ter, CR and LF characters may be changed by writing new values to the contents  
of registers S2 and S3 respectively.)  
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Host-Based Controller Modem  
AT Command Set  
Test and Debug AT Commands (continued)  
The modem may generate a single line or multiple lines, based on modem capabilities and call results, followed  
by a standard OK final result code. For example, if call setup failed, only that result is useful. Each information  
text line shall be formatted as follows, including one or more key=value pairs:  
DIAG <token key=value [[key=value] [key=value]] …>  
DIAG 5 characters, hex: 44, 49, 41, 47, 20  
<
left angle bracket (less than sign), hex: 3C  
token unique 32-bit hexadecimal string 2A4D3263, hex: 32, 41, 34, 44, 33, 32, 36, 33  
space space character, hex 20  
key  
=
single hexadecimal numeric digit, see Table 1  
equal sign, hex: 3D  
value any string as defined below (Tables 1-3, etc.)  
right angle bracket (greater than sign), hex: 3E  
>
Unless otherwise noted, all values are hexadecimal numbers. Any numeric values from tables in ITU V.58 are  
converted to hexadecimal. Multi-digit values are reported MSD first. Leading 0’s may be deleted.  
1
The following table includes all the items listed in Microsoft’s specification for the AT#UD command. Within these  
items, the one that has a check mark in the “Implemented” column is implemented in this release of the modem  
product. For an item that has an extra option table, please check the corresponding option table to see exactly  
which option has been implemented.  
Table 1 - AT#UD Last Call Status Report Format  
Key  
0
1
2
3
4
5
6-F  
10  
value(s)  
2 digits  
Table 2  
Table 3  
Table 4  
String  
required  
yes  
Definition  
Implemented  
Diagnostic Command Specification revision number, digit.digit  
Call Setup Result code  
Multi-media mode  
DTE-DCE interface mode  
V.8 CM octet string, same format as V.25ter Annex A, in quotes  
V.8 JM octet string, same format as V.25ter Annex A, in quotes  
Reserved for call negotiation reports  
Received signal power level, in –dBm (0-43)  
X
X
0-A  
0-1  
0
yes  
String  
yes  
2 digits  
2
X
Note 4  
11  
12  
13  
2 digits  
2 digits  
2 digits  
Note 4  
Note 4  
Note 4  
Transmit signal power level, in –dBm (0-17)  
Estimated noise level, in –dBm (10-90)  
Normalized Mean Squared error, 100 (0x64) = minimum inter-symbol  
distance  
X
X
14  
15  
16  
17  
18  
2 digits  
2 digits  
4 digits  
2 digits  
Table 5  
Note 4  
Note 4  
Note 4  
Note 4  
Note 4  
Near echo loss, in units of dB  
Far echo loss, in units of dB  
Far echo delay, in units of ms  
Round Trip delay, in units of ms  
V.34 INFO bit map  
X
X
X
19-1F  
20  
21  
22  
23  
24  
25  
26  
27  
28-2F  
30  
31  
32  
33  
Reserved for modulation setup and training reports (Note 5)  
Transmit Carrier Negotiation Result  
Receive Carrier Negotiation Result  
Transmit Carrier symbol rate (0-8000)  
Receive Carrier symbol rate (0-8000)  
Transmit Carrier frequency (0-4000)  
Receive Carrier frequency (0-4000)  
Initial transmit carrier data rate (0-64000)  
Initial receive carrier data rate (0-64000)  
Reserved  
Temporary carrier loss event count  
Carrier Rate re-negotiation event count  
Carrier Retrains requested  
Carrier Retrain requests granted  
Final transmit carrier rate  
Table 6  
Table 6  
4 digits  
4 digits  
4 digits  
4 digits  
4 digits  
4 digits  
Note 6  
Note 6  
0-1F40  
0-1F40  
0-FA0  
0-FA0  
0-FA00  
0-FA00  
X
X
X
X
X
X
2 digits  
2 digits  
2 digits  
2 digits  
4 digits  
4 digits  
0-FF  
0-FF  
0-FF  
0-FF  
0-FA00  
0-FA00  
X
X
X
X
34  
35  
Final receive carrier rate  
36-3F  
40  
Reserved  
Protocol Negotiation Result (Note 7)  
Table 7  
0-2  
X
1
2
Tables are numbered separately within this #UD section to be consistent with the Microsoft specification.  
Notes refer to notes in the Microsoft specification  
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Test and Debug AT Commands (continued)  
41  
42  
43  
44  
45  
3 digits  
2 digits  
2 digits  
Table 8  
4 digits  
0-400  
0-FF  
0-FF  
0-1  
Error Control frame size  
Error control link timeouts  
Error control link NAKs  
Compression Negotiation Result (Note 7)  
Compression dictionary size (Note 7)  
X
X
0-200  
46-4F  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
5A-5F  
60  
61  
Reserved  
1 digit  
1 digit  
0-2  
0-2  
Transmit flow control: 0 = off; 1 = DC1/DC3; 2 = V.24 ckt 106/133  
Receive flow control: 0 = off; 1 = DC1/DC3; 2 = V.24 ckt 106/133  
Transmit characters sent from DTE (Note 8)  
Received characters sent to DTE (Note 8)  
Transmit characters lost (data overrun errors from DTE) (Note 9)  
Received characters lost (data overrun errors to DTE) (Note 9)  
Transmit Frame count, if error control protocol running (Note 8)  
Received Frame count, if error control protocol running (Note 8)  
Transmit Frame error count, if error control protocol running (Note 9)  
Received Frame error count, if error control protocol running (Note 9)  
Reserved  
8 digits  
8 digits  
8 digits  
8 digits  
8 digits  
8 digits  
8 digits  
8 digits  
0-FFFFFFFF  
0-FFFFFFFF  
0-FFFF  
0-FFFF  
0-FFFFFFFF  
0-FFFFFFFF  
0-FFFF  
X
X
X
X
0-FFFF  
Tables 9-10  
2 digits  
Note 10  
0-FF  
Termination Cause  
Call Waiting event count  
X
62-7F  
80-FF  
Reserved for future versions of this specification  
Reserved for manufacturer proprietary keys  
Table 2 - Call Setup Result Codes  
Code  
Definition  
Implemented  
0
1
No previous call (modem log has been cleared since any previous calls)  
No dial tone detected  
X
X
2
3
Reorder signal detected, network busy  
Busy signal detected  
X
X
4
No recognized signal detected  
5
Voice detected  
6
7
8
9
A
B
C-F  
Text telephone signal detected (see V.18)  
Data Answering signal detected (e.g. V.25 ANS, V.8 ANSam)  
Data Calling signal detected (e.g. V.25 CT, V.8 CI)  
Fax Answering signal detected (e.g. T.30 CED, DIS)  
Fax Calling signal detected (e.g. T.30 CNG)  
V.8bis signal detected  
X
Reserved  
Table 6 - gstnModulationSchemeActive from 3.7.2/V.58  
Value (hex)  
Description  
Implemented  
0
1
V.17  
V.21  
2
V.22  
3
V.22bis  
4
V.23 Constant Carrier (1200/75)  
5
6
V.23 Switched Carrier (half duplex)  
V.26bis  
7
V.26ter  
8
V.27ter  
9
V.29 HD  
A
B
C
V.32  
V.32bis  
V.34  
X
X
D
V.34 HD  
E
F
V.pcm (asymmetric)  
V.pcm (symmetric)  
Reserved (V.58)  
“X2™”  
“K56FLEX™”  
“V.FC”  
E-7F  
80  
81  
82  
83  
80-FF  
X
“V.32terbo”  
Reserved for mfgs  
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AT Command Set  
Test and Debug AT Commands (continued)  
Table 7 - errorControl Active from 3.5.2/V.58  
Value  
0
1
2
3-7F  
80  
Description  
Disable/none  
V.42 LAPM  
V.42 Alternative protocol (MNP™)  
Reserved (V.58)  
MNP10™  
Implemented  
X
X
X
81  
82  
ECP™ Enhanced Cellular Protocol  
ETC  
82-FF  
Reserved for mfgs  
Table 8 - compressionActive from 3.2.2/V.58  
Value  
0
Description  
None  
V.42bis  
Implemented  
X
X
1
2-7F  
80  
Reserved (V.58)  
MNP5™  
X
81-FF  
Reserved for mfgs  
Table 9 - Additional callCleared codes (3.6.4/V.58)  
Code Definition  
Implemented  
1
2
3
4
No Previous call  
X
X
Call is still in progress  
Call Waiting signal detected  
Delayed - see ETS 300 001  
X
Table 10 - callCleared codes from 3.6.4/V.58-1994  
callCleared: Indicates that the DCE has gone on hook and that the previously existing network connection has  
been cleared. These values are hexadecimal, converted from decimal in V.58.  
Value  
0
1-3  
A
B
C
Description  
CauseUnidentified  
See Table 9 above  
NMSinitiatedDialCall  
NMSinitiatedLeasedLineRestoral  
NMSinitiatedRedial  
NMSinitiatedDialDisconnect  
PowerLoss  
Notes  
Call setup issues  
Implemented  
X
X
-- Network Management System  
DCE  
D
14  
15  
16  
17  
18  
19  
1E  
1F  
20  
28  
29  
EquipmentFailure  
FrontPanelDisconnectRequested  
FrontPanelLeasedLineRestoral  
AutomaticLeasedLineRestoral  
InactivityTimerExpired  
cct116RestoralRequest  
cct108isOffInhibitsDial  
cct108turnedOff  
X
X
DTE Interface  
Line Interface  
NoNumberProvided  
BlacklistedNumber  
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Test and Debug AT Commands (continued)  
2A  
2B  
2C  
2D  
2E  
2F  
30  
31  
32  
33  
34  
3C  
3D  
3E  
3F  
40  
41  
42  
46  
47  
50  
51  
52  
5A  
5B  
5C  
5D  
5E  
5F  
60  
64  
CallAttemptsLimitExceeded  
ExtensionPhoneOffHook  
CallSetupFailTimerExpired  
IncomingCallDetected  
LoopCurrentInterrupted  
NoDialTone  
VoiceDetected  
ReorderTone  
SitTone  
EngagedTone  
LongSpaceDisconnect  
CarrierLost  
TrainingFailed  
NoModulationinCommon  
RetrainFailed  
RetrainAttemptCountExceeded  
GstnCleardownReceived  
FaxDetected  
InTestMode  
IntrusiveSelfTestInitiated  
AnyKeyAbort  
DteHangupCommand  
DteResetCommand  
FrameReject  
NoErrorControlEstablished  
ProtocolViolation  
X
X
X
X
Signal Converter  
X
X
X
Test  
Call Control  
X
X
Error Control  
X
X
n400exceeded  
NegotiationFailed  
DisconnectFrameReceived  
SabmeFrameReceived  
LossOfSynchronization  
Data Compression  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Commands Reference S-Registers  
S-registers generally affect how the AT commands perform. Contents of the registers can be displayed or  
modified when the modem is in command mode.  
To display the value of an S-register:  
TYPE:  
PRESS:  
ATSn? where n is the register number.  
Enter  
To modify the value of an S-register:  
TYPE: ATSn = r  
where n is the register number, and r is the new register value.  
PRESS:  
Enter  
S0  
Auto Answer Ring Number  
This register determines the number of rings the modem will count before automatically answering a call. Enter 0  
(zero) if you do not want the modem to automatically answer at all. When disabled, the modem can only answer  
with an ATA command.  
Range:  
Default:  
Units:  
0—255  
0
rings  
S1  
Ring Counter  
This register, Ring Counter, is read only. The value of S1 is incremented with each ring. If no rings occur over a  
six second interval, this register is cleared.  
Range:  
Default:  
Units:  
0—255  
0
rings  
S2  
AT Escape Character (user defined)  
This register determines the ASCII valued used for an escape sequence. The default is the + character. The  
escape sequence allows the modem to exit data mode and enter command mode when on-line. Values greater  
than 127 disable the escape sequence.  
Range:  
Default:  
Units:  
0—255  
43  
ASCII  
S3  
Command Line Termination Character (user defined)  
This register determines the ASCII values as the carriage return character. This character is used to end  
command lines and result codes.  
Range:  
Default:  
Units:  
0—127, ASCII decimal  
13 (carriage return)  
ASCII  
Note: This register value is not stored with &W command.  
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AT Commands Reference S-Registers (continued)  
S4  
Response Formatting Character (user defined)  
This register determines the ASCII value used as the line feed character. The modem uses a line feed character  
in command mode when it responds to the computer.  
Range:  
Default:  
Units:  
0—127, ASCII decimal  
10 (line feed)  
ASCII  
Note: This register value is not stored with &W command.  
S5 Command Line Editing Character (user defined)  
This register sets the character recognized as a backspace and pertains to asynchronous only. The modem will  
not recognize the backspace character if it is set to a value that is greater than 32 ASCII. This character can be  
used to edit a command line. When the echo command is enabled, the modem echoes back to the local DTE the  
backspace character, an ASCII space character, and a second backspace character. This means a total of three  
characters are transmitted each time the modem processes the backspace character.  
Range:  
Default:  
Units:  
0—127, ASCII decimal  
8 (backspace)  
ASCII  
Note: This register value is not stored with &W command.  
S6 Wait Before Dialing  
This register sets the length of time, in seconds, that the modem must wait (pause) after going off-hook before  
dialing the first digit of the telephone number. The modem always pauses for a minimum of two seconds, even if  
the value of S6 is less that two seconds. The wait for dial tone call progress feature (W dial modifier in the dial  
string) will override the value in register S6. This operation, however, may be affected by some ATX options  
according to country restrictions.  
Range:  
Default:  
Units:  
2—65  
2
seconds  
S7  
Connection Completion Time-Out  
This register sets the time, in seconds, that the modem must wait before hanging up because carrier is not  
detected. The timer is started when the modem finishes dialing (originate), or goes off-hook (answer). In  
originate mode, the timer is reset upon detection of an answer tone if allowed by country restriction. The timer  
also specifies the wait for silence time for the @ dial modifier in seconds. S7 is not associated with the W dial  
modifier.  
Range:  
Default:  
Units:  
1—255  
50  
seconds  
30  
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AT Command Set  
AT Commands Reference S-Registers (continued)  
S8  
Comma Dial Modifier Time  
This register sets the time, in seconds, that the modem must pause when it encounters a comma (,) in the dial  
command string.  
Range:  
Default:  
Units:  
0—65  
2
seconds  
S10  
Automatic Disconnect Delay  
This register sets the length of time, in tenths of a second, that the modem waits before hanging up after a loss of  
carrier. This allows for a temporary carrier loss without causing the local modem to disconnect.  
The actual interval the modem waits before disconnecting is the value in register S10.  
Range:  
Default:  
Units:  
1—254  
20  
.1 seconds  
S11  
DTMF Dialing Speed  
This register determines the dialing speed which is prefixed for each country.  
Range:  
Default:  
Units:  
50—150  
95  
.001 seconds  
S12  
Escape Guard Time  
This register sets the value (in 20 ms increments) for the required pause after the escape sequence (default 1 s).  
Range:  
Default:  
Units:  
0—255  
50  
.02 seconds  
S14  
General Bit Mapped Options Status  
Indicates the status of command options. Only bit 3 and bit 6 are used, read-only.  
Bit 3  
Result codes (Vn)  
0 = Numeric (V0)  
1 = Verbose (Vl) (Default)  
Pulse dial PPS selection (&Pn)  
Bit 6  
0 = 10 PPS (&p0, &p1) (Default)  
1 = 20 PPS (&p2)  
Default:  
8 (00001000b)  
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AT Commands Reference S-Registers (continued)  
S21  
V.24/General Bit Mapped Options Status  
Indicates the status of command options. Only bits 3, 4 and 5 are used, read-only.  
Bits 3-4  
DTR behavior (&Dn)  
0 = &D0 selected  
1 = &D1 selected  
2 = &D2 selected (Default)  
3 = &D3 selected  
Bit 5  
DCD behavior (&Cn)  
0 = &C0 selected  
1 = &C1 selected (Default)  
48 (00110000b)  
Default:  
S22  
Results Bit Mapped Options Status  
Indicates the status of command options. Only bits 4, 5 and 6 are used, read only.  
Bits 4-6  
result codes (Xn)  
0 = X0 selected  
4 = X1 selected  
5 = X2 selected  
6 = X3 selected  
7 = X4 selected (Default)  
Bit 7  
Pulse dial make/break ratio (&Pn)  
0 = 33/67 make/break ratio (&P1, &P2) (Default)  
1 = 39/61 make/break ratio (&P0)  
112 (01110000b)  
Default:  
S24  
Timer to Control Sleep Mode  
This command displays the number of seconds of inactivity (no characters sent from the DTE, no RING) in the  
off-line command state before the modem places itself into standby mode. A value of zero prevents standby  
mode. S24 is an alias for S89.  
Note: If a number between 1 and 4 is entered for this register, it will set the value to 5, and the inactivity before  
standby will be 5 seconds. This is done for compatibility with previous products which allowed time-outs  
down to 1 s.  
Range:  
Default:  
0, 5—65  
10  
S28  
V.34 Modulation Enable/Disable  
This register enables/disables V.34 modulation.  
0 = disabled, 1 = enabled  
Range:  
Default:  
0 —1  
1
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AT Command Set  
AT Commands Reference S-Registers (continued)  
S30  
Inactivity Timer  
S30 specifies the length of time (in minutes) that the modem will wait before disconnecting when no data is sent  
or received. This function is only applicable to buffer mode..  
Range:  
Default:  
0—255  
0
S32  
Synthetic Ring Volume  
This register specifies a synthetic ring volume.  
Range:  
Default:  
0—255 (allowed, but not meaningful)  
10  
S33  
Synthetic Ring Frequency  
This register specifies a synthetic ring frequency. There are five choices, with 0 meaning disabled.  
Range:  
Default:  
0—5  
0
S35  
Data Calling Tone  
Data Calling Tone is a tone of certain frequency and cadence as specified in V.25 which allows remote  
Data/FAX/Voice discrimination. The frequency is 1300 Hz with a cadence of .5 s on and 2 s off.  
0 = disabled, 1 = enabled  
Range:  
Default:  
0—1  
0
S37  
Dial Line Rate (default 0)  
This register sets the maximum line data rate. In K56flex and V.90 mode, S37 controls the upstream V.34 rate.  
S37 = 0  
S37 = 1  
S37 = 2  
S37 = 3  
S37 = 4  
S37 = 5  
S37 = 6  
S37 = 7  
S37 = 8  
S37 = 9  
S37 = 10  
S37 = 11  
S37 = 12  
S37 = 13  
S37 = 14  
S37 = 15  
S37 = 16  
S37 = 17  
S37 = 18  
S37 = 19  
auto rate  
reserved  
1200/75 bit/s (V.23)  
300 bit/s  
reserved  
1200 bit/s  
2400 bit/s  
4800 bit/s  
7200 bit/s  
9600 bit/s  
12000 bit/s  
14400 bit/s  
16800 bit/s  
19200 bit/s  
21600 bit/s  
24000 bit/s  
26400 bit/s  
28800 bit/s  
31200 bit/s  
33600 bit/s  
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AT Command Set  
Data Addendum  
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AT Commands Reference S-Registers (continued)  
S38  
K56flex Downstream Rate  
To force a particular K56flex downstream rate, use S-register S38. S38=0 disables K56flex, and may allow a  
more reliable V.34 connection. S38=1 default allows the modem to select the downstream rate automatically.  
Other values of S38 force the downstream rate, with fallback to V.34 if unsuccessful at the configured rate:  
S38=0  
S38=1  
S38=2  
S38=3  
S38=4  
S38=5  
S38=6  
S38=7  
S38=8  
S38=9  
S38=10  
S38=11  
S38=12  
S38=13  
S38=14  
Disable K56flex  
Automatic rate selection (default)  
32 kbit/s  
34 kbit/s  
36 kbit/s  
38 kbit/s  
40 kbit/s  
42 kbit/s  
44 kbit/s  
46 kbit/s  
48 kbit/s  
50 kbit/s  
52 kbit/s  
54 kbit/s  
56 kbit/s  
The number of robbed-bit signaling (RBS) frames detected decreases the true DCE rate per the following table:  
RBS links Rate hit (kbit/s)  
0
1
2
3
4
5
6
0
2
4
4
6
8
8
For example, if S38=10 and there are 3 RBS links, the K56flex downstream rate will be 48-4=44 kbit/s. The  
exception to this is for 32 kbit/s and 34 kbit/s, which are the true rates regardless of the number of RBS frames  
detected.  
One special value of S38, S38 = 251, is used for back-to-back (factory) testing of V.34 rates, with DSP code  
running in external memory. Set S38=251 on both originating and answering modems. (This feature is not valid  
with ramless solution.)  
S42  
Auto Rate (default 1, range 0 1)  
This command is used for testing and debugging only.  
V.32bis and V.22bis auto rate is disabled. Retrain operation is disabled or enabled in data mode, and fallback is  
disabled in data mode. In K56flex mode, S42=0 forces connection at the rate specified by S38 (even if the rate  
cannot be sustained), without fallback to V.34.  
0 = auto rate disabled, 1 = enabled.  
Range:  
Default:  
0—1  
1
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Host-Based Controller Modem  
AT Command Set  
AT Commands Reference S-Registers (continued)  
S43  
Auto Mode (default 1, range 0 1)  
This command is used for testing and debugging only.  
V.32bis startup auto mode operation disabled.  
0 = auto mode disabled, 1 = enabled.  
Range:  
Default:  
0—1  
1
S48  
LAPM Error Control and Feature Negotiation (default 7)  
S48 = 7  
Negotiation enabled  
S48 = 128  
Negotiation disabled; forces immediate fallback options specified in S36  
The following chart lists the S36 and S48 configuration settings necessary to negotiate certain types of  
connections:  
S48 = 7  
S48 = 128  
S36 = 0, 2  
S36 = 1, 3  
S36 = 4, 6  
S36 = 5, 7  
LAPM or hangup  
LAPM or async  
LAPM, MNP, or hangup  
do not use  
async  
MNP or hangup  
MNP or async  
LAPM, MNP, or async  
S89  
Timer to Control Sleep Mode  
This command displays the number of seconds of inactivity (no characters sent from the DTE, no RING) in the  
off-line command state before the modem places itself into standby mode. A value of zero prevents standby  
mode.  
Note: If a number between 1 and 4 is entered for this register, it will set the value to 5, and the inactivity before  
standby will be 5 seconds. This is done for compatibility with previous products which allowed time-outs  
down to 1 s.  
Range:  
Default:  
0, 5—65  
10  
S90  
Read-only Local Phone  
This register tells the status of the Local Phone. It is read-only.  
0 = on-hook  
1 = off-hook  
S91  
Line Transmit Level  
This register is effective only for Japan. It specifies the line transmit level in dBm with an implied minus sign.  
Range:  
Default:  
Units:  
6—15  
15  
1 dB  
S108  
Network Codec Type  
S108=22  
S108=33  
µ-Law  
A-law  
S108=7 default, or any other value: Coding as specified by digital modem in V.8bis information. If an old server  
does not tell its code type in V.8bis, then the client modem chooses based on its country ID. µ-law regions are  
Japan, Taiwan, Korea, Hong Kong, North America, and Latin America. Everywhere else is A-law. (This S –  
Register is valid only in K56flex mode.)  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT FAX Command Set (Class 1 FAX)  
The Lucent Technologies modem supports FAX commands conforming to EIA standard 578. These commands  
are given here with short descriptions; complete explanations are given in the standard, available from the  
Electronic Industries Association.  
Table 5. The AT FAX Command Set Summary  
Command  
Description  
+FCLASS?  
+FCLASS = ?  
+FCLASS = n  
+FTS = <n>  
+FRS = <n>  
+FTM = <m>  
+FRM = <m>  
+FTH = <m>  
+FRH = <m>  
+FTM = ?  
+FRM = ?  
+FTH = ?  
Service class indication  
Service class capabilities  
Service class selection  
Transmission silence  
Receive silence  
Transmit FAX data with <m> carrier  
Receive FAX data with <m> carrier  
Transmit HDLC data with <m> carrier  
Receive HDLC data with <m> carrier  
Transmit FAX modulation  
Receive FAX modulation  
Transmit HDLC Data modulation  
Receive HDLC Data modulation  
Manufacturer Identification  
+FRH = ?  
+FMI?  
+FMM?  
Product Identification  
+FMR?  
Version/Revision Information  
+FPR = <n>  
+FPR = ?  
Set DTE-DCE Fax port rate  
Reports all fax port rate that DCE supports  
Reports the current fax port rate of DTE-DCE  
Set DCE Adaptive answer mode  
Display valid adaptive answer values that DCE supports  
Display current set value of adaptive answer mode  
+FPR?  
+FAA = <n>  
+FAA = ?  
+FAA?  
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Host-Based Controller Modem  
AT Command Set  
1998  
Data Addendum  
June 15,  
AT FAX Commands Reference  
+FCLASS?  
Service Class Indication  
This command causes the modem to display the current setting. The modem can operate either as a Class 0  
data modem or a class 1 FAX modem.  
Typical responses:  
+FCLASS?  
000 if in data mode; 001 if in FAX class 1, 008 if in voice mode, and 080  
if in  
VoiceViewmode.  
+FCLASS=? Service Class Capabilities  
This command causes the modem to display the classes it supports.  
Typical responses:  
+FCLASS = ? 0, 1, 8, 80  
+FCLASS=n Service Class Selection  
This command sets the modem for class n operation, where n is either a 0 or 1.  
Parameters:  
Default:  
0, 1, 8, 80  
0
Command options:  
+FCLASS = 0 Select data mode.  
+FCLASS = 1 Select Facsimile Class 1.  
+FCLASS = 8 Select voice mode.  
+FLCASS = 80 Select VoiceView mode.  
+FTS=<n>  
Transmission Silence  
This command causes the modem to stop transmitting data and pause for 10 * n ms. At the end of this period,  
the modem then responds OK. You can specify any number from 0 through 255 as the value of n; for example, a  
value of 5 specifies a period of 50 ms.  
n = 0 255 (10 ms intervals)  
+FRS=<n>  
Receive Silence  
This command causes the modem to listen and wait for a 10 * n ms period of silence on the line. At the end of  
this period, the modem then responds OK. You can specify any number from 0 through 255 as the value of n; for  
example, a value of 5 specifies a period of 50 ms.  
n = 0 255 (10 ms intervals)  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Fax Commands Reference (continued)  
+FTM=<m>  
Transmit FAX Data with <m> Carrier  
This command causes the modem to transmit data at the modulation specified by <m>. The following table  
shows the values you can enter for this command and the meaning of those values.  
Command Option  
Modulation  
Speed (bits/s)  
+FTM=3  
+FTM=24  
+FTM=48  
+FTM=72  
+FTM=96  
+FTM=73  
+FTM=74  
+FTM=97  
+FTM=98  
+FTM=121  
+FTM=122  
+FTM=145  
+FTM=146  
V.21 Channel 2  
V.27ter  
300  
2400  
4800  
7200  
9600  
7200  
7200  
9600  
9600  
12000  
12000  
14400  
14400  
V.27ter  
V.29  
V.29  
V.17  
V.17 (short train)  
V.17  
V.17 (short train)  
V.17  
V.17 (short train)  
V.17  
V.17 (short train)  
+FRM=<m>  
Receive FAX Data with <m> Carrier  
This command causes the modem to receive data at the modulation specified by <m>.  
Command Option  
Modulation  
Speed (bits/s)  
+FRM=3  
+FRM=24  
+FRM=48  
+FRM=72  
+FRM=96  
+FRM=73  
+FRM=74  
+FRM=97  
+FRM=98  
+FRM=121  
+FRM=122  
+FRM=145  
+FRM=146  
V.21 Channel 2  
V.27ter  
300  
2400  
4800  
7200  
9600  
7200  
7200  
9600  
9600  
12000  
12000  
14400  
14400  
V.27ter  
V.29  
V.29  
V.17  
V.17 (short train)  
V.17  
V.17 (short train)  
V.17  
V.17 (short train)  
V.17  
V.17 (short train)  
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Host-Based Controller Modem  
AT Command Set  
AT Fax Commands Reference (continued)  
+FTH=<m>  
Transmit HDLC Data with <m> Carrier  
This command causes the modem to transmit data framed in the HDLC protocol at the modulation specified  
by <m>.  
Command Option  
Modulation  
Speed (bits/s)  
+FTH=3  
+FTH=24  
+FTH=48  
+FTH=72  
+FTH=96  
+FTH=73  
+FTH=74  
+FTH=97  
+FTH=98  
+FTH=121  
+FTH=122  
+FTH=145  
+FTH=146  
V.21 Channel 2  
V.27ter  
300  
2400  
4800  
7200  
9600  
7200  
7200  
9600  
9600  
12000  
12000  
14400  
14400  
V.27ter  
V.29  
V.29  
V.17  
V.17 (short train)  
V.17  
V.17 (short train)  
V.17  
V.17 (short train)  
V.17  
V.17 (short train)  
+FRH=<m>  
Receive HDLC Data with <m> Carrier  
This command causes the modem to receive data framed in the HDLC protocol at the modulation specified  
by <m>.  
Command Option  
Modulation  
Speed  
(bits/s)  
+FRH=3  
+FRH=24  
+FRH=48  
+FRH=72  
+FRH=96  
+FRH=73  
+FRH=74  
+FRH=97  
+FRH=98  
+FRH=121  
+FRH=122  
+FRH=145  
+FRH=146  
V.21 Channel 2  
V.27ter  
300  
2400  
4800  
7200  
9600  
7200  
7200  
9600  
9600  
12000  
12000  
14400  
14400  
V.27ter  
V.29  
V.29  
V.17  
V.17 (short train)  
V.17  
V.17 (short train)  
V.17  
V.17 (short train)  
V.17  
V.17 (short train)  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Fax Commands Reference (continued)  
+FPR=<n>  
Select Fax port rate  
This command sets the DTE to DCE fax port rate.  
DTE command  
DCE action  
Description or notes  
•FPR • 0  
•FPR • 1  
•FPR • 2  
•FPR • 4  
•FPR • 8  
•FPR • 10  
•FPR • 18  
Execute •IPR • 0  
Select automatic rate detection  
Set DTE-DCE to 2400 bit/s  
Execute •IPR • 2400  
Execute •IPR • 4800  
Execute •IPR • 9600  
Execute •IPR • 19 200  
Execute •IPR • 38 400  
Execute •IPR • 57 600  
Report (0,1,2,4,8,10,18)  
Set DTE-DCE rate to 4800 bit/s  
Set DTE-DCE rate to 9600 bit/s  
Set DTE-DCE rate to 19 200 bit/s  
Set DTE-DCE rate to 38 400 bit/s  
Set DTE-DCE rate to 57 600 bit/s  
•FPR • ? (if all values listed above  
are supported)  
DCE supports 2400, 4800, 9600, 19 200,  
38 400  
and 57 600 bit/s  
•FPR? (if •IPR • 0)  
Report 0  
Report 1  
Report 2  
Report 4  
Report 8  
Report 10  
Report 18  
Report 255  
DTE-DCE rate is automatically detected  
DTE-DCE rate is 2400 bit/s  
DTE-DCE rate is 4800 bit/s  
DTE-DCE rate is 9600 bit/s  
DTE-DCE rate is 19 200 bit/s  
DTE-DCE rate is 38 400 bit/s  
DTE-DCE rate is 57 600 bit/s  
255 indicates invalid setting  
•FPR? (if •IFC • 2400)  
•FPR? (if •IFC • 4800)  
•FPR? (if •IFC • 9600)  
•FPR? (if •IFC • 19 200)  
•FPR? (if •IFC • 38 400)  
•FPR? (if •IFC • 57 600)  
•FPR? (all other •IPR settings)  
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Host-Based Controller Modem  
AT Command Set  
AT Fax Commands Reference (continued)  
+FAA Adaptive answer  
A Service Class 1 Facsimile DCE may have the ability to answer as a data modem DCE or as a Facsimile DCE. It  
also may be able to adaptively change from Class 1 facsimile mode (•FCLASS•1.0) to data modem operation  
(•FCLASS•0) in response to the incoming call. The •FAA parameter controls this feature.  
Write syntax:  
Valid values:  
Default value:  
Mandatory value:  
•FAA•<value>  
0, 1  
0
0
•FAA•0  
•FAA•1  
The DCE shall answer only as a Class 1 facsimile device. No automatic switching of service class  
shall occur based on the calling device type.  
The DCE can answer and automatically determine whether to answer as a facsimile DCE or as a  
data modem. If a data modem is detected, the DCE shall operate as described in 8.3.2.4.  
NOTE – The •FAA parameter controls automatic switching only from Class 1 to Class 0, for call answering only. It  
does not affect call origination, switching to Class 1 from other classes, or switching to classes other than Class 0.  
Manufacturer Identification (+FMI)  
Read Syntax: AT+FMI  
Result:  
Lucent Data/Fax  
Lucent Data/Fax/Voice/VoiceView (depending on product)  
Product Identification (+FMM)  
Read Syntax: AT+FMM  
Result:  
Data/Fax  
Data/Fax/Voice/VoiceView (depending on product)  
Version / Revision Information (+FMR)  
Read Syntax: AT+FMR  
Result:  
Lucent driver version number (e.g. 1.5.05)  
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Voice Command Set  
The AT Voice Command set follows a modified IS-101 architecture. The commands are sent through the comm  
port, but the data path is sent either through the comm port or through a DMA channel using the wave driver.  
Tables 1 and 2 show a summary of the AT Voice Command Set.  
Summary of the AT Voice Command Set  
Table 6. The AT Voice Command Set  
Voice Commands  
Command  
AT+FCLASS=8  
Description  
Enter voice mode  
AT+VIP  
Initialize voice parameters  
Caller ID  
AT+VCID  
AT+VDR  
AT+VGT  
AT+VIT  
Distinctive ring  
Speaker volume control  
DTE/DCE inactivity timer  
Automatic hang-up control  
AT+VNH  
AT+VTD  
AT+VLS  
AT+VSD  
AT+VRA  
AT+VRN  
AT+VTS  
AT+VTR  
AT+VTX  
AT+VRX  
AT+VSM  
AT+VEM  
AT+VGR  
AT+VPR  
Set beep tone duration timer  
Analog source/destination selection and DTMF/tone reporting  
Set silence detection timer  
Set ringback goes away timer  
Set ringback never came timer  
DTMF/tone generation  
Start full duplex voice transmission and reception process  
Enter voice transmit state (see examples)  
Enter voice receive state (see examples)  
Voice compression method  
Event reporting and masking  
Receive gain selection  
Select DTE/DCE interface rate  
Table 7. The AT Voice Command Set Not Defined In IS-101 Specification  
Command  
Description  
ATS32  
ATS33  
Synthetic ring volume  
Synthesized ring frequency  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Voice Commands Reference  
AT+FCLASS=8  
Enter Voice Mode  
The command AT+FCLASS=8 puts the modem in voice mode. Speakerphone and TAD modes are subsumed  
under the more general heading of voice mode, and use a particular subset of voice mode commands to  
implement their respective features and functions.  
The modem controller will maintain the overall state of the system so as to know when voice commands are  
issued in the context of using the speakerphone versus TAD or other voice contexts.  
AT+FCLASS?  
AT+FCLASS=?  
Returns the current DCE mode  
Queries the DCE for the range of modes supported DCE returns: 0, 1, 8, 80 (data, FAX,  
voice, VoiceView)  
AT+VIP  
Initialize Voice Parameters  
The command AT+VIP causes the modem to initialize all the voice parameters to their default values. The  
command has no effect on the +FCLASS setting.  
AT+VCID=<pmode> Caller ID  
With this command caller identification is enabled/disabled.  
Disable caller ID:  
<pmode>=0  
Enable, formatted caller report: <pmode>=1  
Enable, unformatted caller report: <pmode>=2  
AT+VCID?  
Returns the current caller ID pmode  
AT+VCID=?  
Queries the DCE for the range of supported caller ID report formats DCE returns: 0, 1, 2  
AT+VDR=<enable>,<report>  
Distinctive Ringing & Cadence Report  
This command will enable the distinctive ringing feature. This will allow a report of DROF/DRON to follow an  
exact ring cadence coming over the phone line.  
AT+VDR?  
Returns the current values of <enable> and <report  
AT+VDR=?  
Queries the DCE for the range of supported distinctive ring configurations DCE  
(0 255)  
returns: (0, 1),  
AT+VGT=<level>  
Speaker Volume Control  
This command will enable the speaker volume control.  
<level> is 0 255  
<level>=128: Nominal volume level for sending to speaker  
<level>=<value greater than 128>: Increase volume above nominal level  
<level>=<value less than 128>: Decrease volume below nominal level  
AT+VGT?  
Returns current value  
AT+VGT=?  
Returns range of supported values  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Voice Commands Reference (continued)  
AT+VGR=<gain>  
Receive Gain Selection  
This command will enable the receive microphone gain control.  
<gain> is 0 255: the only useful range is 121—134  
<gain>=128: nominal level for receive gain from microphone  
<gain>=<value greater than 128>: increase gain above nominal level  
<gain>=<value less than 128>: decrease gain below nominal level  
TAD mode—This command may be used in TAD local recording to control the recording level from the  
microphone.  
Speakerphone mode—This command may be used to control the gain to the remote caller.  
AT+VGR?  
Returns current value of receive gain  
Returns range of supported gain values  
AT+VGR=?  
AT+VEM=<mask>  
Event Reporting and Masking  
The DTE can use this command to disable an event report regardless of the DCE state, or of the analog signal  
source or destination configuration. Mask is Bits 0—33 (i.e., FFFFFFFFC). See the IS-101 specification for  
defined bit values.  
AT+VEM?  
Returns the current values of the mask  
AT+VEM=?  
Queries the DCE for the range of supported service level events  
AT+VIT = <Timer>  
DTE/DCE Inactivity Timer  
This command sets the DCE’s value for the DTE/DCE inactivity timer. The units are in one seconds.  
AT+VIT?  
Returns the current value of the timer  
AT+VIT=?  
Queries the DCE for the range of supported values  
AT+VNH = <Hook>  
Automatic Hang-up Control  
This command causes the DCE to enable or disable automatic hangups in the data and facsimile modes. See  
the IS-101 specification for the detailed description of this command and its interaction with the +FCLASS and  
ATH commands.  
<hook> = 0 The DCE retains automatic hangups (which is the way in the other non-voice modes).  
<hook> = 2 The DCE disables automatic hangups in the other non-voice modes. The DTE only performs a  
logical hangup (returns the “OK” result code).  
AT+VNH?  
Returns the current value  
AT+VNH=?  
Returns the supported values  
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Host-Based Controller Modem  
AT Command Set  
AT Voice Commands Reference (continued)  
AT Commands: Speakerphone Operation  
AT+VLS=<label>  
Analog Source/Destination Selection  
This is a general purpose analog source/destination command that attaches various analog devices to the system  
in voice mode.  
Speakerphone on: AT+VLS=7.  
Attach internal speaker and internal microphone, DCE off-hook.  
Speakerphone off: AT+VLS=0.  
Detach analog devices, DCE on-hook.  
Microphone Control/Phone Muting:  
AT+VLS=5 disables/detaches microphone analog source (leaving speaker only) when speakerphone is in  
operation (phone mute feature).  
AT+VLS=7 restores/attaches microphone along with speaker (normal speakerphone operation).  
AT+VLS?  
Reports the current analog source/destination configuration, along with a listing of all event codes  
reported from the modem to the DTE under that configuration.  
AT+VLS=?  
Queries the DCE for the range of supported configurations and the list of unsolicited event codes  
that the modem will report to the DTE under each configuration. For speakerphone, the  
configurations supported are 0, 5, and 7 as explained above.  
AT Commands: Telephone Answering Device  
AT+VTD=<dur>  
Beep Tone Duration Timer  
This command sets the default duration for DTMF/tone generation in 0.01 s increments.  
For DTMF digits, beep tone duration is the interdigit time. For tone generation, this number is the actual tone  
duration.  
AT+VTS=<string>  
DTMF and Tone Generation in Voice Mode  
This command will cause the modem to produce a sequence of DTMF tones (or other tones, such as dial tone,  
busy, silence, etc.) as specified in the string parameter. Specifications for the format of tone strings are detailed  
in IS-101.  
AT+VTS? reports the current <string> parameter.  
AT+VTS=? reports the range of frequencies supported for tone generation, as well as tone duration.  
Example: (200 3300), (200 3300), (0 500).  
AT+VTR  
Start voice transmission and reception process  
This command will cause DCE to start full duplex voice mode. In this mode, the DTE selects the analog source  
and sink through the +VLS command; the selections can be microphone and speaker or GSTN. The DCE is not  
required to perform any Acoustic Echo Cancellation nor any Line Echo Cancellation.  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Voice Commands Reference (continued)  
AT+VLS=?  
Analog Source/Destination Selection and DTMF/Tone Reporting  
Requests for the modem's DTMF/Tone reporting capabilities are made using this command. For each system  
configuration in voice mode (i.e., speakerphone and answering machine), the modem reports the capabilities that  
are enabled for the configuration.  
Also, for each configuration, the modem indicates tone-reporting capabilities for each of the three different voice  
states: voice transmit data, voice receive data, and voice command state (voice idle).  
TAD supports each of the following IS-101 analog source/destination configurations:  
Label #  
Description  
0
1
2
3
4
5
6
7
DCE on-hook, local phone connected to Telco.  
DCE off-hook, DCE connected to Telco.  
DCE off-hook, local phone connected to DCE.  
DCE off-hook, local phone connected to Telco, DCE to local phone.  
Speaker connected to DCE, DCE on-hook (playback messages)  
Speaker connected to DCE, DCE off-hook (call screening)  
Microphone connected to DCE, DCE on-hook (record greeting)  
Microphone and speaker connected, DCE off-hook (speakerphone)  
AT+VSD=<sds, sdi> Silence Detection (QUIET and SILENCE)  
This command sets both the silence detection sensitivity (<sds>) and silence detection interval (<sdi>).  
Larger values of <sds> indicate that the modem is to treat noisier line conditions as silence.  
<sds> = 128 ; Nominal level of sensitivity; 40 dBm (default) .  
<sds> > 128 ; More aggressive ; <sds>=129 is 39 dBm.  
<sds> < 128 ; Less aggressive; <sds>=127 is 41 dBm.  
The <sdi> specifies the amount of time the modem shall wait before reporting silence to the DTE. It is used for  
determining :  
Presumed hang-up (SILENCE), after which the modem sends <DLE>-s to DTE.  
Default is 5 seconds.  
AT+VSM=<cml>,<vsr>  
Compression Method and Sampling Rate Specifications  
This command enables the compression method and sampling specifications where cml = compression method  
label and vsr = voice sampling rate.  
AT+VSM?  
Returns the numeric and string labels of the compression method currently in use, and the  
sampling rate currently in use.  
AT+VSM=?  
Reports the voice compression methods supported by the DCE, and the voice sampling rates at  
which they are supported: The default is 129,8000 (16-bit linear, 8.0 kHz )  
128, 8-bit linear, (7200, 8000, 11025)  
129, 16-bit linear, (7200, 8000, 11025)  
130, 8-bit A-law, (8000)  
131, 8-bit µ-law, (8000)  
132, IMA ADPCM, (8000)  
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Host-Based Controller Modem  
AT Command Set  
AT Voice Commands Reference (continued)  
AT+VRA=<interval> Ringback Goes Away Timer  
The modem uses the ringback goes away timer when originating a call.  
This command sets this timer to the amount of time the modem shall wait between ringbacks before assuming  
that the remote station has gone off-hook.  
AT+VRA?  
Returns the current value.  
AT+VRA=?  
Returns the range of supported values.  
AT+VRN=<interval> Ringback Never Appeared Timer  
The modem uses the ringback never appeared timer when originating a call.  
The AT+VRN command sets this timer to the amount of time that the modem shall spend looking for an initial  
ringback. If ringback is not detected within this interval, the modem shall assume that the remote station has  
gone off-hook.  
AT+VRN?  
Returns the current value.  
AT+VRN=?  
Returns the supported values.  
AT+VPR=<rate>  
Select DTE/DCE Interface Rate  
The AT+VPR command returns an OK for any rate but has no action.  
Events Reported to the DTE :  
The modem will return OK when going off-hook in voice mode (+FCLASS=8). After answering in voice mode, the  
modem may send any of the following <DLE> shielded event codes to the DTE, as appropriate:  
<DLE> Shielded Codes Sent from DCE to DTE  
Code Character  
Description  
0
9, A D, #, *  
DTMF tones  
a
Answer tone  
b
Busy tone  
c
d
Fax calling tone  
Dial tone  
e
h
H
R
s
Data calling tone  
Local phone on-hook  
Local phone off-hook  
Ring  
Silence timer has expired  
End of voice data transmission  
CAS tone detected  
<ETX>  
@
<DLE> Codes Sent to DCE:  
For simple actions in voice mode, the modem may send any of the following <DLE> shielded event codes  
(in ASCII) to the DTE, as appropriate:  
<DLE> Shielded Codes Sent from DTE to DCE  
Code Character  
Description  
u
d
Bump up the volume by 1 dB  
Bump down the volume by 1 dB  
End of voice data transmission  
End receive data state  
<ETX>  
!
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Voice Commands Reference (continued)  
AT Voice Command Set Not Defined In IS-101 Specifications  
S32  
This command will provide a synthetic ring volume in dB with an implied minus sign. The default = 10.  
S33 Synthetic Ring Frequency  
Synthetic Ring Volume  
This command will provide a synthetic ring frequency. The valid values are 0 5, with 0 = disabled and 1 5 =  
five varying ring frequencies. The default = 0.  
AT+VTS=!  
This does a flash hook.  
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Voice Commands Reference (continued)  
Voice Modem Command Examples  
The application issues AT commands to request actions by the modem, and the modem responds with standard  
TIA-602 result codes to tell the application that the requested action has been completed.  
Notes for Speakerphone Examples  
1. If the user decides to pick up his local (parallel) phone while in the middle of a speakerphone call, the DCE will  
sense the transition and send the application a <DLE>-H sequence. The application which should always be  
screening for DLE-shielded codes in the background when the modem is in the voice mode can then respond  
to the <DLE>-H (for example, by resetting speakerphone buttons or doing whatever else needs to be done with  
the speakerphone interface).  
2. DLE-shielded codes that the modem will send to the application while in speakerphone mode are:  
Command  
DLE - c  
Description  
FAX calling tone detect.  
DLE - e  
DLE - h  
DLE - H  
Data calling tone detect.  
Local phone went on-hook (hung up).  
Local phone went off-hook (picked up).  
3. When the user is in the middle of a speakerphone call, call waiting (hold operation) can be initiated when the  
user hears the call-waiting signal through the speaker. Call waiting entails the following communication  
between the application and the modem.  
Command  
ATD!  
Description  
Put the current call on hold, and answer the new incoming call.  
OK  
DCE responds. Original call is on hold, and the speakerphone user is connected  
to the second call.  
To terminate the second call and return to the first, the application should again send the modem the  
ATD! command.  
ATD!  
OK  
Terminate the second call and return to the original call.  
DCE responds. Second call is terminated and the user is again connected to the  
original call.  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Voice Commands Reference (continued)  
Example # 1: Initiating a speakerphone call (with phone muting during conversation)  
The speakerphone application is loaded. The modem is initially idle, in data mode. The user then decides to pick  
up the phone to place a speakerphone call. Picking up the phone should initiate the following chain of events.  
Command  
AT+FCLASS=8  
OK  
Description  
The modem enters voice mode.  
DCE responds. Now in voice mode.  
Set speaker volume to normal level.  
DCE responds. Volume level is set.  
Attach internal speaker and microphone, DCE off-hook.  
AT+VGT=128  
OK  
AT+VLS=7  
OK  
DCE responds. Now in speakerphone mode. Phone off hook, dial tone audible,  
speaker and microphone ready to use.  
ATD5551234  
OK  
Provide dial string for DCE to place the call.  
DCE responds. Number is dialed.  
Call is placed through phone network. Caller can hear ringback or busy signal from the phone being called. If the  
person at the other end picks up the phone, caller and callee converse. If the speakerphone user decides to  
mute his speakerphone, the application sends the following to mute the speakerphone.  
Command  
AT+VLS=5  
OK  
Description  
Enter Mute Mode. Mic is disconnected from the line, leaving the speaker only.  
DCE responds. The mic is no longer connected to the line, and the  
speakerphone is mute.  
After a while, the speakerphone user decides to turn the mic back on (mute off). This is done when the  
application issues the following command.  
Command  
AT+VLS=7  
OK  
Description  
No Mute. Microphone is reattached to system along with speaker.  
DCE responds. Speakerphone with both mic and speaker is operational.  
Conversation ends, and user hangs up.  
Command  
ATH  
Description  
Application tells the modem to terminate the call with standard AT command.  
DCE responds.  
OK  
Speakerphone is now on-hook. The speaker and mic have been detached from the system, and the modem  
is now in data mode (+FCLASS=0).  
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Host-Based Controller Modem  
AT Command Set  
AT Voice Commands Reference (continued)  
Example # 2: Initiating a stored number speakerphone call  
The speakerphone application is loaded. The modem is initially idle, in data mode. The user then decides to  
place a speakerphone call either by entering the number without going off-hook first or selecting a number  
previously stored in the application. When the user tells the application to dial, the following events occur:  
Command  
Description  
ATD5551234;  
Provide a dial string appended with a semicolon (;) for the DCE to place the call  
and go to command mode.  
OK  
The DCE responds, and the number is dialed.  
The call is placed through the phone network in data mode. The modem stays in command mode, and the  
application should wait for the OK before sending next command.  
Command  
Description  
AT+FCLASS=8  
OK  
AT+VGT=128  
OK  
Put the modem into voice mode.  
DCE responds: The modem is now in voice mode.  
Set the speaker volume to normal level.  
DCE responds: The volume level is set.  
AT+VLS=7  
Start the speakerphone by attaching the internal speaker and mic to the line;  
DCE off-hook.  
OK  
DCE responds: Speakerphone mode is active. The phone is off hook; dial tone is  
audible, and the speaker and mic are ready to use.  
The caller can hear ringback or busy signal from the phone being called. If the person at the other end picks up,  
the caller and callee converse.  
The conversation ends, and the speakerphone user hangs up.  
Command  
Description  
ATH  
The application tells the modem to terminate the call with a standard  
AT command.  
OK  
DCE responds: The speakerphone is now on-hook. The speaker and  
microphone have been detached from the system, and the modem is now in  
data mode (+FCLASS = 0).  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Voice Commands Reference (continued)  
Example # 3: Answering a speakerphone call  
The speakerphone application is loaded. The modem is initially idle, in data mode. In this mode, the modem is  
always screening for incoming calls.  
Command  
Description  
RING  
DCE reports ringing from remote station. The user decides to pick-up the  
phone, which should initiate the following:  
AT+FCLASS=8  
OK  
Modem enters voice mode.  
DCE responds. Now in voice mode.  
Speaker volume set to normal.  
DCE responds. Volume level is set.  
AT+VGT=128  
OK  
AT+VLS=7  
Call is answered: Attach internal speaker and microphone to the line, DCE  
off-hook.  
OK  
DCE responds. Now in speakerphone mode, connected to the line  
(call is answered).  
Speakerphone user picks up the phone and hears the caller from the other end. Conversation continues for  
awhile. When it ends, the speakerphone user hangs up.  
Command  
ATH  
Description  
DTE issues standard command to terminate call.  
OK  
DCE responds. Speakerphone goes on-hook. Speaker and microphone are  
detached from system, and modem returns to data mode (+FCLASS=0).  
Note 1: When the local phone goes off-hook in the middle of a speakerphone call, the speakerphone  
disconnects, and the DCE returns <DLE>-H to the DTE.  
Note 2: When the speakerphone is on, call waiting (hold operation) is initiated by:  
Command  
ATD!  
Description  
DTE sends hold command to DCE.  
DCE responds.  
OK  
Example # 4: Receiving an incoming FAX call in speakerphone or TAD mode and switching to FAX mode  
In this example, the sequence begins at the point of the user or telephone answering device (TAD) taking the  
speakerphone off-hook and detecting a FAX calling tone from the other end.  
Command  
Description  
<DLE>-c  
DCE detects FAX calling tone from the remote FAX and informs the application  
by sending DLE-c sequence.  
AT+FCLASS=1  
Application switches modem out of voice mode, and into FAX mode.  
OK  
DCE responds. Now in FAX mode, still off-hook and connected to incoming call.  
Application instructs modem to answer FAX call using standard AT commands.  
ATA  
OK  
DCE responds. The call is answered, and modem continues with procedures to  
establish connection and receive FAX transmission. The application software  
will then take care of disconnecting the call when the FAX is done, and returns to  
data mode (+FCLASS=0).  
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Host-Based Controller Modem  
AT Command Set  
AT Voice Commands Reference (continued)  
Example # 5: Receiving an incoming data call in speakerphone or TAD mode and switching to data mode  
In this example, the sequence begins at the point of the user or telephone answering device (TAD) taking the  
speakerphone off-hook and detecting a data calling tone from the other end.  
Command  
Description  
<DLE>-e  
DCE detects data calling tone from the remote modem and informs the  
application by sending DLE-e sequence.  
AT+FCLASS=0  
OK  
Application switches modem out of voice mode, and into data mode.  
DCE responds. Now in data mode, still off-hook and connected to incoming call.  
Application instructs modem to answer data call using standard AT commands.  
ATA  
CONNECT  
DCE responds. The call is answered, and modem continues with procedures to  
establish connection.  
Example # 6: Switching from speakerphone mode to TAD mode  
In this example, the sequence begins at the point of the user in speakerphone mode and at some point in time  
wants to put the other end in hold. The application may switch to TAD mode in hold state and play some music  
wave file to the line.  
Command  
AT+VLS=1  
OK  
Description  
Applications switches modem out of speakerphone mode and into TAD mode.  
DCE responds. Now in TAD mode.  
AT+VTX  
CONNECT  
<Data>  
DTE selects voice transmit mode.  
DCE responds.  
DTE plays music through modem to remote caller.  
DTE indicates end of voice transmit data.  
DCE acknowledges switch back to voice command state.  
<DLE><ETX>  
OK  
The Application may switch back to speakerphone mode by following the example to switch from TAD mode to  
speakerphone mode.  
Example # 7: Call screening & recording a message using TAD - IS101 <dle> shielded method.  
The TAD application is loaded. The modem is initially idle, in data mode (+FCLASS=0).  
Command  
RING  
Description  
DCE reports ringing from remote station.  
The modem enters voice mode.  
DCE responds.  
AT+FCLASS=8  
OK  
AT+VGT=128  
OK  
Set speaker volume to normal.  
DCE responds.  
AT+VSM=132,8000  
OK  
DTE selects IMA ADPCM with 8.0 kHz sampling rate.  
DCE responds.  
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AT Command Set  
Data Addendum  
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AT Voice Commands Reference (continued)  
AT+VSD=128,0  
DTE selects normal silence detection sensitivity, and a silence detection interval  
of 0 seconds. Disable silence detection.  
OK  
DCE responds.  
<DLE>-R  
AT+VLS=1  
OK  
DCE detects another ring, and notifies DTE.  
The modem answers the call.  
DCE is off-hook.  
The TAD next plays its greeting message, issues a beep, and records the caller's message.  
Command  
AT+VTX  
Description  
DTE selects voice transmit mode.  
DCE responds.  
CONNECT  
<Data>  
DTE plays greeting through modem to remote caller.  
DTE indicates end of voice transmit data.  
DCE acknowledges switch back to voice command state.  
DTE annotates greeting message with a 1.2 second beep.  
DCE responds.  
<DLE><ETX>  
OK  
AT+VTS=[933,0,120]  
OK  
AT+VSD=128,50  
DTE selects normal silence detection sensitivity and a silence detection interval  
of 5 seconds. Enable silence detection.  
OK  
DEC responds.  
AT+VLS=5  
OK  
The speaker is attached to the system, and the modem is off-hook.  
DCE is off-hook.  
AT+VRX  
CONNECT  
<Data>  
DTE selects voice receive mode.  
DCE agrees.  
DCE delivers <DLE> shielded voice message to DTE.  
The caller leaves a message, and hangs up. The modem detects silence for a specified period of time, and then  
notifies the DTE that the message being recorded has ended.  
Command  
Description  
<DLE>-s  
DCE issues presumed end of message after silence detection interval has  
elapsed.  
<DLE>-!  
DTE signals end of voice receive state.  
<DLE><ETX>  
DCE ends voice transmission to DTR, with this code, and returns back to voice  
command state.  
ATH  
OK  
DTE issues standard command to terminate call. Speakerphone goes on-hook,  
speaker and microphone are detached from system, and modem returns to data  
mode (+FCLASS=0).  
DCE responds.  
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Host-Based Controller Modem  
AT Command Set  
AT Voice Commands Reference (continued)  
Example # 8: Call screening & recording a message with TAD—using the wave driver to transmit and  
receive voice samples  
The TAD application is loaded. The modem is initially idle, in data mode (+FCLASS=0).  
Command  
RING  
Description  
DCE reports ringing from remote station.  
The modem enters voice mode.  
DCE responds.  
AT+FCLASS=8  
OK  
AT+VGT=128  
OK  
Set speaker volume to normal.  
DCE responds.  
AT+VSD=128,0  
DTE selects normal silence detection sensitivity, and a silence detection interval  
of 0 seconds. Disable silence detection.  
OK  
DCE responds.  
AT+VSM=129,8000  
OK  
DTE selects 16-bit linear voice compression with 8.0 kHz sampling rate.  
DCE responds.  
<DLE>-R  
AT+VLS=1  
OK  
DCE detects another ring, and notifies DTE.  
The modem answers call.  
DCE is off-hook  
The TAD next plays its greeting message, issues a beep, and records the caller's message.  
The Application may transmit voice samples using the wave driver. The application may issue  
WAVE_OUT_OPEN and WAVE_OUT_WRITE messages to the wave driver.  
At the end of the greeting message the application may issue the WAVE_OUT_STOP message to the wave  
driver.  
AT+VTS=[933,0,120]  
OK  
DTE annotates greeting message with a 1.2 second beep.  
DCE responds.  
The Application may receive voice samples using the wave driver. The application may issue  
WAVE_IN_OPEN and WAVE_IN_START messages to the wave driver.  
AT+VSD=128,50  
of  
DTE selects normal silence detection sensitivity and a silence detection interval  
5 seconds. Enable silence detection.  
DCE responds.  
OK  
AT+VLS=5  
OK  
Speaker is attached to system, and modem is off-hook.  
DCE is off-hook  
The caller leaves a message, and hangs up. The modem detects silence for a specified period of time,  
and then notifies the DTE.  
<DLE>-s  
DCE issues presumed end of message after silence detection interval has  
elapsed.  
At the end of the message the application may issue the WAVE_IN_STOP message to the wave driver.  
ATH  
DTE issues standard command to terminate call. DCE goes on-hook,  
speaker and microphone are detached from system, and modem returns to  
data mode (+FCLASS=0).  
OK  
DCE response.  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT DSVD Commands  
In order to use the DSVD without a local phone, a ring 3 application can be used to simulate the local phone. In  
the absence of such an application, the voice connection needs to be auto enabled. This is accomplished by the  
following DSVD custom AT commands:  
Command  
AT-SSE-OF  
AT-SSE-ON  
AT-SSE-AC  
Description  
Simulates virtual offhook event.  
Simulates virtual onhook event.  
Enables auto call whereby the voice channel is established as soon as the connection  
is made with the DSVD modem. There is a single request for each new call.  
**Both sides can be programmed in this mode and the voice channel will be activated  
by one of the modems. The voice channel will stay enabled until the line is dropped.  
AT-SSE-AA  
AT-SSE-AM  
Enables Auto Answer mode allowing the modem to always accept and answer the  
voice channel request.  
Enables Auto Multiple Call mode allowing a new connection every 30 seconds with a  
5 second delay between calls.  
AT-SSE- A -  
AT-SSE-&W  
AT-SSE-&R  
AT-SSE-SN  
AT-SSE-SF  
AT-SSE-FN  
AT-SSE-FF  
Cancels Auto mode  
Writes system audio parameters into the VoiceEeprom registry.  
Reads the current registry parameters from the VoiceEeprom registry.  
Sets silence detection as default mode  
Disables silence detection for the modem  
Sets full duplex mode (with headset) as default  
Disables full duplex mode (with speakerphone), reverting to half duplex mode as  
default  
AT-SSE+VGT= Sets speakerphone gain level  
= ?  
?
Displays range available  
Displays current setting  
AT-SSE+VGR= Sets microphone gain level  
= ?  
?
Displays range available  
Displays current setting  
Standard AT Commands  
AT-SSE=  
= 0 Disables DSVD  
= 1 Enables DSVD  
=? Displays range available  
? Displays current setting  
ATD  
Initiates transition from voice to DSVD  
Hang up modem  
ATH  
AT+VNH=  
Used in conjunction with ATH command for hook control:  
= 0 the DCE will hang up the line when it does not detect a carrier  
= 2 the DCE will remain offhook when it detects no carrier to allow the DTE to switch  
the DCE to another mode  
AT+VIT=  
= x to set the inactivity timer  
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AT Command Set  
1998  
Data Addendum  
June 15,  
V.25ter AT Commands  
The +GMx commands are required by the Microsoft PC98 specifications.  
Manufacturer Identification (+GMI?)  
Read Syntax: AT+GMI?  
Result:  
Lucent Data/Fax  
Lucent Data/Fax/Voice/VoiceView (depending on product)  
Version / Revision Information (+GMR?)  
Read Syntax: AT+GMR?  
Result:  
Lucent driver version number (e.g. 1.5.05)  
Modem Identification (+GMM?)  
Read Syntax: AT+GMM?  
Result:  
H.324 video-ready rev. 1.0  
The chip set supports the following functionalities of the V.25ter for a H.324 call.  
The modified function of the ATD command when issued while the analog voice connection is established. This  
command will not cause the DTMF dialing and tone detection associated with the usual ATD # command.  
The following AT commands, sub-parameters and values are supported  
Table 8. V.25ter AT Commands  
Command  
Sub-  
Values  
Description  
parameter  
AT+A8E=<v8o>,  
<v8a>,<v8cf>  
Defined for two conditions: as a  
parameter to configure  
v8o  
1 The default value disables the CI option  
while in V.8 origination negotiation.  
V.8originating and answering  
operation while the DCE is on-  
hook. It initiates an action if the  
DCE is off-hook. If enabled, V.8  
negotiation does not preclude  
simultaneous implementation of  
other negotiation means like  
V.8bis, V.18, V.32bis.  
However, the modem, when initiating the  
call as a data call, detects ANSam and is  
capable of starting in V.34 mode).  
6 Enables DCE control of V.8 and CI  
option.  
v8a  
1 The default value disables the CI option  
while in V.8 negotiation. However, the  
modem, when answering a call, sends the  
ANSam and is capable of starting in V.34  
mode)  
5 Enables DCE control of V.8 and CI  
option.  
v8cf  
21h Call function for H.324 calls  
c1h Call function for DSVD calls  
AT+A8E?  
Report current values of sub-  
parameters  
AT+A8E=?  
Report supported ranges of values  
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V.25ter AT Commands (continued)  
<v8o>, <v8a>, and <v8cf>  
+A8I:<v8cf><CR>  
This indication is used by an  
answering DCE, if +A8E,<v8a> !=0,  
to indicate detection of a V.8 CI  
signal, and report the recovered  
Call Function octet(s). Value  
<v8cf> is a hexadecimal code octet  
that can take values as shown  
above in +A8E command.  
+A8M=<hexadecimal  
coded CM or JM octet  
string>  
Coded CM  
or JM octet  
Refer to V.8 document for coding.  
Directs the DCE to send a V.8 CM  
or JM signal using the specified  
hexadecimal coded string.  
+A8A:<type><CR>  
<type>  
This indication is used by a calling  
DCE, if +A8E <v8o> #0, to indicate  
detection of an answering signal.  
1 Indicates V.8 ANSam signal  
flags  
0 Indicated no ANSam signal detected  
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AT Command Set  
1998  
Data Addendum  
June 15,  
V.80 AT Commands  
The chip set supports the Synchronous Access Mode and most of the commands specified in V.80 standards.  
The commands are either AT commands issued in the command mode, or in-band commands transmitted in the  
data stream. These in-band commands are delimited by the hexadecimal characters EM (or numerically, 19h.)  
A) Synchronous Access Mode AT commands  
Table 9. V.80 AT Commands  
Command  
Sub-  
parameters  
Values  
Initiate  
Synchronous Access Mode  
when the data state is  
entered.  
Description  
+ES=[<orig_rqst>[,,<ans_fbk  
>]]  
Orig_rqst  
6
Control the manner of  
operation of the V.42 protocol  
in the DCE  
ans_fbk  
8
Initiate  
Synchronous Access Mode  
when connection is  
completed and Data State  
is entered.  
Read Syntax command to  
query the current values of the  
+ES sub-parameters. The  
DCE shall transmit a string of  
information text to the DTE  
consisting of  
+ES?  
+ES:<orig_rqst>, ,<ans_fbk>.  
Test Syntax command to  
obtain all defined values of the  
+ES sub-parameters. The  
DCE shall transmit a string of  
information text to the DTE  
consisting of  
+ES=?  
+ES:( list of supported  
<orig_rqst> values), ,(list of  
supported <ans_fbk> values).  
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V.80 AT Commands (continued)  
Table 10. V.80 AT Commands (continued)  
Command  
Sub-  
Values  
Description  
parameters  
trans_idle  
+ESA=[<trans_idle>[,<framed  
_idle>[,,,<crc_type>[,<nrzi_en  
>]]]]  
0
In transparent sub-  
mode, DCE transmits  
marks (ones) on idle.  
framed_idle  
0
In Framed sub-  
mode, DCE transmits  
HDLC flags on idle.  
1
In Framed sub-  
mode, DCE transmits  
marks (ones) on idle.  
crc_type  
0
Disable CRC  
generation and checking  
1
In Framed sub-  
mode, the 16 bit CRC  
specified in V.42 is  
generated by the DCE in  
the transmit direction and  
checked by the DCE in the  
receive direction.  
nrzi_en  
0
Disable NZRI  
encoding and decoding.  
Read Syntax command to  
query the current values of the  
+ESA sub-parameters  
+ESA?  
Test Syntax command to  
obtain all supported values of  
the +ESA sub-parameters  
+ESA=?  
<off>  
<on>  
Determines the threshold,  
in octets, above which the  
DCE shall generate a flow  
off signal.  
Transmit Flow Control  
+ITF= [<off>[, <on>]]  
Thresholds. This command  
allows the DTE to determine  
the input buffer size in the  
DCE for data on circuit 103  
from the DTE, to control the  
thresholds used for flow  
control of such data.  
Determines the threshold,  
in octets, below which the  
DCE shall generate a flow  
on signal.  
The DCE shall transmit a  
string of information to the  
DTE consisting of : ITF: (list of  
supported <off> values>),(list  
of supported <on> values.  
+ITF=?  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging  
This section lists the homologation testing and debugging commands and homologation parameter values for  
different countries.  
Table 11. The Homologation Testing and Debugging Commands  
Name  
Description  
Value  
Comments  
%Txx Test Commands  
AT%T<val>.  
01  
02  
03  
04  
05  
06  
07  
08  
09  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
Data voice relay on  
Data voice relay off  
Caller-ID relay on  
Caller-ID relay off  
Audio codec on  
Audio codec off  
Shunt relay on  
Shunt relay off  
ac off-hook relay on  
ac off-hook relay off  
Loop limit on  
Loop limit off  
Loop VI on  
Loop VI off  
Ring impedance on  
Ring impedance off  
Write to EEPROM  
AT%T19, <loc>, <val> (<loc> and <val>  
are in hex)  
Read from EEPROM  
Modify homologation parameter  
20  
21  
AT%T20, <loc> (<loc> is in hex).  
AT%T21, <param#>, <param_value>  
(<param#> and <param_value> are in  
hex as defined in the parameters table).  
AT%T22, <param#> (<param#> is in hex  
as defined in the parameters table).  
Read homologation parameter  
Generate DTMF 0 - 9  
22  
23 32  
33  
34  
35 38  
39  
Generate DTMF *  
Generate DTMF #  
Generate DTMF A - D  
V.25 answer tone (2100Hz)  
V.25 data calling tone (1300Hz)  
FAX calling tone (1100Hz)  
40  
41  
1800Hz guard tone  
42  
V.21 channel 1 mark symbol originate  
V.21 channel 1 mark symbol answer  
V.21 channel 1 space symbol originate  
V.21 channel 1 space symbol answer  
V.23 originate channel mark symbol  
V.23 answer channel mark symbol  
V.23 originate channel space symbol  
V.23 answer channel space symbol  
90  
91  
92  
93  
90  
91  
92  
93  
Set S37 = 3, ATB0  
Set S37 = 3, ATB0  
Set S37 = 3, ATB0  
Set S37 = 3, ATB0  
Set S37 = 2  
Set S37 = 2  
Set S37 = 2  
Set S37 = 2  
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Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging (continued)  
Table 11. The Homologation Testing and Debugging Commands (continued)  
Name  
Description  
Value  
90  
91  
90  
91  
90  
91  
90  
91  
90  
91  
90  
91  
90  
91  
90  
91  
90  
91  
91  
93  
76  
77  
78  
79  
80  
81  
82  
90  
91  
90  
91  
90  
91  
90  
91  
90  
91  
90  
91  
Comments  
%Txx V.22 1200 originate signaling  
V.22 1200 answer signaling  
Set S37 = 5  
Set S37 = 5  
Set S37 = 6  
Set S37 = 6  
Set S37 = 7  
Set S37 = 7  
Set S37 = 8  
Set S37 = 8  
Set S37 = 9  
Set S37 = 9  
Set S37 = 10  
Set S37 = 10  
Set S37 = 11  
Set S37 = 11  
Set S37 = 12  
Set S37 = 12  
Set S37 = 13  
Set S37 = 13  
Set S37 = 3  
Set S37 = 3  
V.22bis/V.34 2400 originate signaling*  
V.22bis/V.34 2400 answer signaling*  
V.32/V.34 4800 originate signaling*  
V.32/V.34 4800 answer signaling*  
V.32/V.34 7200 originate signaling*  
V.32/V.34 7200 answer signaling*  
V.32bis/V.34 9600 originate signaling*  
V.32bis/V.34 9600 answer signaling*  
V.32bis/V.34 12000 originate signaling*  
V.32bis/V.34 12000 answer signaling*  
V.32bis /V.3414400 originate signaling*  
V.32bis/V.34 14400 answer signaling*  
V.32ter/V.34 16800 originate signaling*  
V.32ter/V.34 16800 answer signaling*  
V.32ter/V.34 19200 originate signaling*  
V.32ter/V.34 19200 answer signaling*  
V.21 Channel 2 mark symbol  
V.21 Channel 2 space symbol  
V.27 2400 signaling  
V.27 4800 signaling  
V.29 7200 signaling  
V.29 9600 signaling  
V.17 12000 signaling  
V.17 14400 signaling  
Off-Hook  
This puts the modem in off-hook state.  
Set S37 = 14  
V.34 21600 originate signaling  
V.34 21600 answer signaling  
V.34 24000 originate signaling  
V.34 24000 answer signaling  
V.34 26400 originate signaling  
V.34 26400 answer signaling  
V.34 28800 originate signaling  
V.34 28800 answer signaling  
V.34bis 31200 originate signaling  
V.34bis 31200 answer signaling  
V.34bis 33600 originate signaling  
V.34bis 33600 answer signaling  
Set S37 = 14  
Set S37 = 15  
Set S37 = 15  
Set S37 = 16  
Set S37 = 16  
Set S37 = 17  
Set S37 = 17  
Set S37 = 18  
Set S37 = 18  
Set S37 = 19  
Set S37 = 19  
The default is V.34 with register S28 = 1. To disable, set S28 = 0.  
The following example shows how to use the V.22bis 2400 originate signaling homologation test command:  
S28 = 0  
S37 = 6  
AT%T90  
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Host-Based Controller Modem  
AT Command Set  
AT Commands for Homologation Testing and Debugging (continued)  
Configuring for Different Countries  
To configure for a specific country, execute the following AT commands:  
AT%T19,0,country_code in HEX (refer to Table 2)  
Verify with the ATI9 command (which displays the country name) that the right country has been configured.  
Table 12. The Country Codes  
Country  
Country_Code in HEX  
USA  
19  
1
2
3
4
5
6
7
8
9
Australia  
Belgium  
Denmark  
Finland  
France  
Germany  
The Netherlands  
Italy  
New Zealand  
Norway  
Spain  
A
B
Sweden  
C
Switzerland  
United Kingdom  
Austria  
D
E
F
Japan  
10  
11  
12  
13  
14  
15  
16  
17  
18  
1A  
1B  
1C  
1D  
1E  
1F  
20  
21  
22  
23  
24  
People’s Republic of China  
Korea  
Malaysia  
Singapore  
Taiwan  
Thailand  
Indonesia  
Portugal  
Ireland  
Hong Kong  
Canada  
Mexico  
India  
Vietnam  
Philippines  
Greece  
Hungary  
Turkey  
South Africa  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging (continued)  
Modifying Homologation Parameters  
Once the modem is configured for a country, the homologation parameters shown in Table 3 can be temporarily  
altered for that country with the following AT command  
AT%T21,par#,param_value  
where par# and param_value should be entered in HEX. For example, AT%T21,7,28 sets the call progress  
threshold to -40 dB. AT%T22,par# displays the current value of the parameter in HEX. The par# parameter  
descriptions are shown in Table 3. The country specific default values (param_value) are shown in Table 4.  
Note: If a parameter is changed with the AT%T21 command, the ATZ and AT&F commands do not reset the  
homologation parameters to the default values (i.e., the changes made are not reset until the power is turned off).  
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AT Command Set  
AT Commands for Homologation Testing and Debugging (continued)  
Homologation Parameters  
Table 13. The Homologation Parameters  
Par #  
Parameter Description  
Pulse dial make time  
Range  
Reference  
1
2
3
0—255  
0—255  
ATD  
ATD  
ATD  
Pulse dial break time  
Pulse dial digit pattern  
1 = normal, 2 = Sweden,  
3 = Norway  
4
5
6
7
DTMF high tone level in dB with implied minus sign  
Min. DTMF dial speed in ms  
0—255  
ATD  
S11  
S11  
0—255  
0—255  
Max. DTMF dial speed in ms  
Call progress detection threshold in dB with implied minus 0—255  
sign  
8
Dial tone delay, i.e., waiting time before dial tone  
detection begins in multiples of 10 ms  
Dial tone hole time in ms  
0—255  
9
a
0—255  
0—255  
Delay before resetting ring count to 0, in multiples of 100  
ms  
b
c
d
Min. ring count for auto-answer  
0—255  
0—255  
0—255  
S0  
S0  
Max. ring count for auto-answer  
Min. ring signal period =  
1000/(0.833 x Max. ring frequency)  
Max. ring signal period =  
e
0—255  
1000/(0.833 x Min. ring frequency)  
Min. ring cadence on time, in multiples of 10 ms  
f
0—255  
0—255  
10  
11  
Min ring cadence off time, in multiple of 20 ms  
Min. busy cadence on time, in multiples of 10 ms  
0—255; If 0, use the standard  
busy detection algorithm;  
otherwise, use the country  
specific values for cadence  
0—255; If 0, use the standard  
busy detection algorithm;  
otherwise, use the country  
specific values for cadence  
0—255  
12  
Max. busy cadence on time, in multiples of 10 ms  
13  
14  
Number of busy cycles required to detect busy condition  
Min. busy cadence off time, in multiples of 10 ms  
0—255; If 0, use the standard  
busy detection algorithm;  
otherwise, use the country  
specific values for cadence  
0—255; If 0, use the standard  
busy detection algorithm;  
otherwise, use the country  
specific values for cadence  
0 = disabled, 1 = enabled  
15  
Max. busy cadence off time, in multiples of 10 ms  
16  
Continuous # unavailable detection flag  
17  
18  
Answer tone validation time in multiples of 10 ms  
Blacklisting/delayed flag  
0—255  
0 = disabled, 1 = enabled  
ATD  
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AT Command Set  
Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging (continued)  
Table 13. The Homologation Parameters (continued)  
Par #  
Parameter Description  
Range  
Reference  
19  
Number of failed attempts allowed before  
blacklisting  
0—255  
ATD  
1a  
1b  
1c  
1d  
Troubled call delay in minutes  
Ineffective call delay in minutes  
Erroneous call delay in minutes  
0—255  
0—255  
0—255  
ATD  
ATD  
ATD  
ATD  
Blacklisting duration in multiple of 10 minutes 0—255;  
0 = only delayed and no blacklisting  
255 = no limit (i.e., till power turned off)  
0—255, 0 = current sense disabled.  
1e  
1f  
Over-current sense validation time in  
multiples of 10 ms  
Calling tone flag  
ATA, ATD  
ATD , S35  
0 = disabled  
1 = enabled, and disable with ^ dial  
modifier permitted  
2 = enabled, and disable with ^ dial  
modifier not permitted  
0 = not permitted  
1 = permitted  
20  
Blind dial flag  
ATD , ATX  
2 = permitted with speaker on  
0 = not permitted  
1 = permitted  
0 = not present & adjustable  
1 = 550 Hz, 2 = 1800 Hz  
0 = not permitted  
1 = permitted  
0 = no restrictions  
1 = restricted by S7 duration  
2 = not allowed  
21  
22  
23  
24  
Busy detect disable (with ATX) flag  
Guard tone type  
ATD , ATX  
S37  
Bell modes permitted flag  
Off-hook (ATH1) restrictions  
ATB  
ATH1  
25  
26  
Shunt relay on time during off-hook in  
multiples of 10 ms.  
Hook flash time in multiples of 10 ms  
0—255  
0 = shunt relay disabled  
0—255  
ATD  
ATD  
0 = hook flash not allowed  
0—65  
27  
28  
29  
2a  
2b  
2c  
2d  
Min. blind dial pause in seconds  
Max. blind dial pause in seconds  
Min. no answer time-out in seconds  
Max. no answer time-out in seconds  
Min. dial pause time in seconds  
Max. dial pause time in seconds  
S6  
S6  
S7  
S7  
S8  
S8  
S10  
0—65  
0—65  
0—65  
0—65  
0—65  
Min. no carrier disconnect time in multiples of 1—65  
100 ms  
2e  
Max. no carrier disconnect time in multiples of 1—255  
100 ms  
S10  
2f  
Transmit level in dB with implied minus sign  
Dial modifier validation  
0—255  
ATD  
30  
0 = if an invalid dial modifier is found, treat the  
entire dial string as null (no digits dialed)  
1 = ignore invalid dial modifiers  
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AT Command Set  
AT Commands for Homologation Testing and Debugging (continued)  
Table 13. The Homologation Parameters (continued)  
Par #  
31  
Parameter Description  
TAD receive gain  
Range  
Reference  
0—255  
32  
Half/full wave ring detection  
0 = halfwave, 1 = fullwave  
0—255  
33  
Number of failed attempts allowed in first stage  
delayed dialing  
ATD  
34  
Number of all failed attempts ( to any number)  
allowed before any further dial attempts are blocked  
Erroneous call increment count  
0—255  
ATD  
255 = not applicable  
0—255  
35  
36  
37  
38  
39  
3a  
3b  
ATD  
ATD  
ATD  
Dial tone validation time in multiples of 100 ms  
Busy tone detection during dial tone detection flag  
DTMF high and low tone level difference in dB  
Local phone detection in speakerphone  
Pulse dialing flag  
0—255  
0 = not required, 1 = required  
0—255  
0 = enabled; 1 = disabled  
0 = enabled; 1 = disabled  
ATD  
Dial tone/call progress filter index  
0 = 340—560 Hz  
2 = 363—502 Hz  
4 = 415—460 Hz  
0—255  
1 = 310—485 Hz  
3 = 276—504 Hz  
5 = 310—640 Hz  
3c  
3d  
3e  
Dial tone detection threshold in dB  
ABCD dialing permitted flag  
0 = permitted, 1 = not permitted  
ATD  
ATD  
Comma pause duration limit in seconds. (If there are 0—255  
multiple commas between digits, the total pause  
duration is limited to the duration set by this  
parameter).  
3f  
TAD transmit level in dB  
0—255  
40  
Data/FAX carrier receive threshold in dB. There is a 6 0—255  
dB offset in DSP. This parameter value should set to:  
(required threshold [6 dB] DAA gain)  
41  
No dialtone time-out duration while detecting dialtone 0—255  
with W dial modifier, in seconds  
ATD  
42  
43  
44  
45  
46  
47  
48  
49  
FAX/Data answer tone detection threshold in dB  
Dialtone level (absolute value)  
0—255  
0—255  
0—255  
FAX receive threshold in dB  
Pulse and tone dial in same dial string permitted flag 0 = permitted, 1 = not permitted  
ATD  
Ringer impedance relay flag  
DC loop V/I characteristics relay flag  
DC loop limiting relay flag  
0 = off, 1 = on  
0 = off, 1 = on  
0 = off, 1 = on  
Real/complex impedance  
0x0X = real, Tx & Rx gains set by mercury  
internal components. X = Don’t care  
0x10 = real, Tx gain set by mercury  
internal components & Rx gain set by  
external components.  
0x12 = complex, Tx gain set by mercury  
internal components & Rx gain set by  
external components. Mercury internal  
switch used to select complex impedance.  
This parameter is relevant only when a Mercury  
line codec is used.  
4a  
Mercury register CIOCA MSB value—receive gain  
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Data Addendum  
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AT Commands for Homologation Testing and Debugging (continued)  
Par #  
Parameter Description  
Mercury register CIOCA LSB value—hybrid,  
impedance, etc.  
Range  
Reference  
4b  
This parameter is relevant only when a Mercury  
line codec is used.  
4c  
4d  
4e  
4f  
Mercury register CIOCB MSB value—transmit gain  
This parameter is relevant only when a Mercury  
line codec is used.  
Mercury register CIOCB LSB value—BOM control  
This parameter is relevant only when a Mercury  
line codec is used.  
TAD Mercury register CIOCB MSB value—transmit  
gain in TAD mode  
This parameter is relevant only when a Mercury  
line codec is used.  
FDSP Mercury register CIOCB MSB value—transmit This parameter is relevant only when a Mercury  
gain in speakerphone mode line codec is used.  
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AT Command Set  
AT Commands for Homologation Testing and Debugging (continued)  
Country Specific Homologation Parameters  
Country specific values for the homologation parameters are shown in Table 14.  
Note: The values listed in Table 14 are typical values and change based on OEM preferences.  
Table 14. The Country Specific Homologation Parameters  
Par. #  
1
NA  
36  
64  
1
Australia  
Belgium  
33  
67  
1
Denmark  
Finland  
40  
60  
1
France  
34  
67  
1
Germany  
33  
64  
1
36  
64  
1
41  
60  
1
2
3
6
8
6
4
8
6
13  
90  
90  
43  
0
4
50  
150  
43  
0
80  
150  
43  
0
90  
90  
37  
0
90  
90  
39  
0
90  
90  
43  
0
90  
90  
38  
5
5
6
7
8
255  
60  
1
100  
80  
2
30  
80  
2
50  
100  
2
28  
100  
1
40  
70  
2
50  
60  
1
9
a
b
255  
18  
80  
15  
30  
18  
60  
4
6
5
4
4
3
6
c
21  
92  
15  
30  
0
18  
80  
15  
30  
40  
60  
4
18  
80  
15  
30  
0
18  
80  
15  
30  
10  
66  
4
15  
66  
24  
30  
40  
63  
2
20  
63  
15  
30  
9
d
e
f
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
1a  
1b  
1c  
1d  
1e  
1f  
20  
21  
22  
23  
0
0
55  
4
4
4
18  
60  
0
0
40  
60  
0
0
10  
65  
0
37  
63  
0
20  
60  
0
0
0
1
1
10  
0
80  
1
15  
1
32  
1
20  
1
45  
1
20  
1
5
10  
1
4
10  
1
4
6
12  
1
1
1
1
1
1
1
1
1
1
1
1
1
120  
12  
0
1
1
60  
6
1
1
12  
0
6
255  
0
255  
0
6
0
0
0
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
2
0
1
1
1
1
1
0
1
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Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging (continued)  
Table 15. The Country Specific Homologation Parameters (continued)  
Par. #  
24  
25  
26  
27  
28  
29  
2a  
2b  
2c  
2d  
2e  
2f  
NA  
0
Australia  
Belgium  
Denmark  
Finland  
France  
Germany  
0
30  
50  
2
0
5
0
5
0
5
0
0
5
5
5
50  
2
12  
4
9
9
27  
18  
4
4
4
2
65  
1
5
4
4
4
2
4
30  
60  
2
30  
60  
4
30  
60  
2
30  
60  
4
30  
30  
60  
4
255  
2
60  
2
65  
1
5
8
20  
1
8
2
6
1
1
1
1
1
255  
10  
0
255  
9
255  
9
255  
9
255  
9
255  
255  
14  
1
9
0
1
1
1
1
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
3a  
3b  
3c  
3d  
3e  
3f  
3
3
3
3
3
3
3
0
0
0
0
0
0
0
1
1
1
1
1
0
2
255  
1
255  
1
255  
1
255  
1
255  
1
255  
12  
1
1
25  
1
25  
0
8
25  
0
25  
0
16  
19  
0
0
0
2
2
2
2
2
2
3
0
0
0
0
0
0
0
0
0
0
1
0
0
0
5
1
4
0
1
1
5
43  
0
43  
0
24  
0
38  
0
39  
0
36  
43  
0
0
255  
10  
37  
50  
43  
0
30  
10  
37  
50  
43  
0
30  
6
30  
10  
37  
50  
43  
0
30  
10  
37  
50  
43  
0
30  
30  
12  
37  
50  
43  
0
10  
37  
50  
43  
0
32  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
4a  
4b  
4c  
10  
36  
0
43  
0
43  
0
43  
0
43  
0
43  
0
43  
43  
1
0
1
0
1
1
0
0
1
0
1
0
0
0
0
1
0
0
0
0
0
1
0
0x00  
0x88  
0x80  
0x6b  
0x12  
0x00  
0x06  
0x6b  
0x10  
0x00  
0x0c  
0x6b  
0x10  
0x00  
0x0c  
0xaa  
0x10  
0x00  
0x0c  
0x6b  
0x10  
0x00  
0x0c  
0x6b  
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0x12  
0x00  
0x06  
0x6b  
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Commands for Homologation Testing and Debugging (continued)  
Par. #  
4d  
NA  
Australia  
0x17  
Belgium  
0x1e  
Denmark  
0x1e  
Finland  
0x1e  
France  
0x1e  
Germany  
0x17  
0x1e  
0x13  
0xcd  
0x13  
0x13  
0x13  
0x13  
0x13  
0x13  
4e  
0xcd  
0xcd  
0xcd  
0xcd  
0xcd  
0xcd  
4f  
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging (continued)  
Table 15. The Country Specific Homologation Parameters (continued)  
Par. # Netherlands  
Italy  
41  
65  
1
New Zeal.  
Norway  
36  
64  
1
Spain  
33  
67  
1
Sweden  
Switzerland  
40  
60  
1
33  
67  
3
40  
60  
2
40  
60  
1
1
2
3
8
6
8
8
6
8
3
4
90  
90  
30  
0
90  
90  
50  
0
90  
90  
43  
0
90  
90  
40  
0
90  
90  
43  
0
90  
90  
50  
0
90  
90  
37  
0
5
6
7
8
30  
80  
2
10  
80  
1
30  
80  
3
50  
100  
1
120  
80  
1
50  
100  
2
30  
80  
2
9
a
b
4
4
4
4
4
2
9
c
44  
80  
15  
30  
15  
65  
4
18  
80  
15  
30  
0
18  
80  
15  
30  
0
18  
80  
15  
30  
10  
66  
2
18  
80  
75  
30  
0
23  
60  
15  
30  
20  
30  
4
18  
60  
15  
30  
8
d
e
f
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
1a  
1b  
1c  
1d  
1e  
1f  
20  
21  
22  
23  
0
0
0
80  
2
2
4
4
11  
65  
0
0
0
10  
65  
1
0
20  
85  
0
8
0
0
0
80  
0
0
1
0
20  
1
20  
1
80  
0
32  
1
20  
0
12  
1
12  
1
5
4
5
10  
1
4
10  
1
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
6
6
12  
0
3
6
6
6
0
0
0
0
0
0
2
1
1
2
2
2
1
1
1
1
1
1
1
1
1
0
1
1
1
1
1
2
2
0
2
2
2
2
1
1
1
1
1
1
1
72  
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Commands for Homologation Testing and Debugging (continued)  
Table 15. The Country Specific Homologation Parameters (continued)  
Par. # Netherlands  
Italy  
2
New Zeal.  
Norway  
Spain  
0
Sweden  
Switzerland  
0
27  
10  
5
0
5
0
5
0
5
0
5
24  
25  
26  
27  
28  
29  
2a  
2b  
2c  
2d  
2e  
2f  
5
5
9
50  
4
10  
4
10  
4
10  
4
10  
4
4
5
10  
30  
60  
2
4
4
4
4
4
30  
60  
2
30  
60  
4
30  
60  
4
30  
60  
5
30  
60  
4
30  
60  
4
2
65  
1
8
8
5
8
8
1
1
1
1
1
1
255  
9
255  
9
255  
9
255  
9
255  
9
255  
9
255  
9
1
1
0
1
1
1
1
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
3a  
3b  
3c  
3d  
3e  
3f  
3
3
3
3
3
3
3
0
0
0
0
0
0
0
1
1
1
1
1
0
1
15  
1
255  
1
255  
1
255  
1
255  
1
10  
1
24  
6
15  
0
15  
0
25  
0
7
12  
0
4
10  
1
0
0
2
2
2
2
2
3
2
0
0
0
0
0
1
0
0
0
0
1
0
1
0
5
4
1
0
5
3
0
27  
0
40  
0
43  
0
39  
0
41  
0
36  
0
39  
0
30  
10  
37  
50  
46  
9
30  
10  
36  
50  
43  
0
30  
10  
37  
50  
43  
0
30  
10  
37  
50  
43  
0
30  
10  
37  
11  
43  
0
30  
14  
37  
50  
43  
0
30  
7
37  
50  
43  
0
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
43  
1
43  
0
43  
0
43  
0
43  
0
43  
0
43  
0
0
1
1
0
1
1
1
0
0
1
0
0
1
1
0
0
0
0
0
0
0
0x10  
0x10  
0x10  
0x10  
0x10  
0x10  
0x12  
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging (continued)  
Par. # Netherlands  
Italy  
0x00  
0x0c  
0x6b  
0x1e  
0x13  
0xcd  
New Zeal.  
0x00  
Norway  
0x00  
0x0c  
Spain  
0x00  
0x0c  
0x6b  
0x1e  
0x13  
0xcd  
Sweden  
Switzerland  
0x00  
0x00  
0x0c  
0x6b  
0x1e  
0x13  
0xcd  
0x00  
0x0c  
0x6b  
0x16  
0x13  
0xcd  
4a  
4b  
4c  
4d  
4e  
4f  
0x0c  
0x06  
0x6b  
0x6b  
0x1e  
0x13  
0xcd  
0x6b  
0x16  
0x17  
0x13  
0x13  
0xcd  
0xcd  
74  
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Commands for Homologation Testing and Debugging (continued)  
Table 15. The Country Specific Homologation Parameters (continued)  
Par. #  
1
UK  
34  
68  
1
Austria  
40  
60  
1
Japan  
34  
66  
1
China  
36  
64  
1
Korea  
32  
64  
1
Malaysia  
Singapore  
34  
66  
1
32  
64  
1
2
3
6
6
7
6
6
7
7
4
90  
90  
43  
0
90  
90  
45  
0
50  
150  
43  
0
50  
150  
43  
0
50  
150  
43  
0
70  
150  
43  
0
70  
150  
43  
0
5
6
7
8
50  
60  
1
100  
80  
1
250  
80  
1
50  
60  
1
50  
60  
1
30  
80  
1
30  
80  
1
9
a
b
4
4
15  
18  
80  
15  
30  
0
15  
18  
80  
15  
30  
0
15  
18  
80  
15  
30  
0
15  
18  
80  
15  
30  
0
15  
18  
80  
15  
30  
0
c
18  
80  
15  
30  
0
18  
80  
15  
30  
0
d
e
f
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
1a  
1b  
1c  
1d  
1e  
1f  
20  
21  
22  
23  
24  
25  
0
0
0
0
0
0
0
4
2
4
4
4
4
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1
1
80  
1
20  
0
50  
1
80  
0
80  
0
80  
1
80  
1
5
6
5
5
5
10  
1
10  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
12  
0
12  
0
0
12  
0
12  
0
0
0
0
0
0
1
2
1
1
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
5
5
5
5
5
5
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging (continued)  
Table 15. The Country Specific Homologation Parameters (continued)  
Par. #  
26  
27  
28  
29  
2a  
2b  
2c  
2d  
2e  
2f  
UK  
7
Austria  
Japan  
50  
4
China  
50  
2
Korea  
50  
4
Malaysia  
Singapore  
9
4
9
3
9
3
4
4
4
255  
35  
59  
2
65  
35  
65  
2
65  
35  
48  
2
20  
5
20  
5
30  
60  
4
30  
60  
4
35  
2
35  
2
8
6
65  
1
65  
1
65  
1
65  
1
65  
1
1
1
255  
9
255  
9
255  
14  
0
255  
10  
0
255  
11  
0
255  
11  
0
255  
11  
0
0
1
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
3a  
3b  
3c  
3d  
3e  
3f  
3
3
3
3
3
3
3
0
0
0
0
0
0
0
1
1
0
1
1
0
0
255  
1
6
255  
1
255  
1
255  
1
255  
1
255  
1
1
25  
0
8
25  
0
25  
0
25  
0
25  
0
25  
0
0
3
2
2
2
2
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
6
1
1
1
1
1
43  
0
45  
0
43  
0
43  
0
43  
0
43  
0
43  
0
30  
10  
37  
50  
43  
0
30  
10  
37  
50  
43  
0
30  
13  
37  
50  
43  
0
30  
10  
37  
50  
43  
0
30  
10  
37  
48  
43  
0
30  
10  
37  
35  
43  
0
30  
10  
37  
35  
43  
0
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
4a  
4b  
43  
0
43  
0
43  
0
43  
0
43  
0
43  
0
43  
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0x12  
0x00  
0x06  
0x10  
0x00  
0x0c  
0x00  
0x88  
0x80  
0x10  
0x00  
0x0c  
0x10  
0x00  
0x0c  
0x10  
0x00  
0x0c  
0x10  
0x00  
0x0c  
76  
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Commands for Homologation Testing and Debugging (continued)  
Par. #  
4c  
UK  
Austria  
0x6b  
Japan  
0x6b  
0x1e  
0x13  
0xcd  
China  
0x6b  
0x1e  
0x13  
0xcd  
Korea  
0x6b  
0x1e  
0x13  
0xcd  
Malaysia  
0x6b  
Singapore  
0x6b  
0x6b  
0x17  
0x13  
0xcd  
0x1e  
0x1e  
0x1e  
4d  
0x13  
0x13  
0x13  
4e  
0xcd  
0xcd  
0xcd  
4f  
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging (continued)  
Table 15. The Country Specific Homologation Parameters (continued)  
Par. #  
1
Taiwan  
36  
64  
1
Thailand  
Indonesia  
Ireland  
34  
67  
1
Portugal  
Hong Kong  
40  
60  
1
36  
64  
1
33  
67  
1
36  
64  
1
2
3
6
6
6
6
6
6
4
50  
150  
43  
0
50  
150  
35  
0
50  
150  
43  
0
90  
90  
43  
0
90  
90  
43  
0
50  
150  
43  
0
5
6
7
8
50  
60  
1
30  
80  
1
50  
60  
1
50  
60  
1
250  
60  
1
50  
60  
1
9
a
b
15  
18  
80  
15  
30  
0
15  
18  
80  
15  
30  
0
15  
18  
80  
15  
30  
0
4
4
15  
18  
80  
15  
30  
0
c
18  
80  
15  
30  
0
18  
86  
24  
30  
0
d
e
f
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
1a  
1b  
1c  
1d  
1e  
1f  
20  
21  
22  
0
0
0
0
0
0
4
4
4
4
4
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
80  
0
5
80  
0
9
30  
0
80  
0
0
1
5
5
5
4
5
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
12  
0
12  
0
12  
0
6
6
12  
0
0
0
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
2
0
0
78  
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Commands for Homologation Testing and Debugging (continued)  
Table 15. The Country Specific Homologation Parameters (continued)  
Par. #  
23  
24  
25  
26  
27  
28  
29  
2a  
2b  
2c  
2d  
2e  
2f  
Taiwan  
Thailand  
Indonesia  
Ireland  
Portugal  
Hong Kong  
1
1
1
1
1
1
0
5
0
5
0
5
0
0
0
5
0
5
50  
3
9
50  
2
7
20  
4
50  
2
2
4
65  
35  
65  
2
10  
35  
65  
2
65  
35  
65  
2
4
4
65  
35  
65  
2
10  
39  
4
30  
60  
2
65  
1
10  
1
65  
1
8
5
65  
1
1
1
255  
10  
0
255  
10  
0
255  
10  
0
255  
9
255  
9
255  
10  
0
0
1
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
3a  
3b  
3c  
3d  
3e  
3f  
3
3
3
3
3
3
0
0
0
0
0
0
1
1
1
1
0
1
255  
1
255  
1
255  
1
255  
1
255  
1
255  
1
25  
0
25  
0
25  
0
25  
0
25  
0
25  
0
2
2
2
3
2
2
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
2
3
1
43  
0
35  
0
43  
0
43  
0
35  
1
43  
0
30  
10  
37  
50  
43  
0
30  
10  
37  
50  
43  
0
30  
10  
37  
50  
43  
0
30  
10  
33  
39  
43  
0
30  
10  
37  
50  
43  
0
30  
10  
37  
50  
43  
0
40  
41  
42  
43  
44  
45  
46  
47  
48  
43  
0
43  
0
43  
0
43  
0
43  
0
43  
0
1
1
1
1
1
1
0
0
0
1
0
0
0
0
0
0
0
0
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging (continued)  
Par. #  
49  
Taiwan  
0x10  
Thailand  
0x10  
Indonesia  
Ireland  
0x12  
Portugal  
0x10  
Hong Kong  
0x10  
0x10  
0x00  
0x0c  
0x6b  
0x1e  
0x13  
0xcd  
0x00  
0x0c  
0x6b  
0x1e  
0x13  
0xcd  
0x00  
0x0c  
0x6b  
0x1e  
0x13  
0xcd  
0x00  
0x0c  
0x6b  
0x1e  
0x13  
0xcd  
0x00  
0x06  
0x6b  
0x17  
0x13  
0xcd  
0x00  
0x0c  
0x6b  
0x1e  
0x13  
0xcd  
4a  
4b  
4c  
4d  
4e  
4f  
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Commands for Homologation Testing and Debugging (continued)  
Table 15. The Country Specific Homologation Parameters (continued)  
Canada  
36  
64  
1
Mexico  
36  
64  
1
India  
36  
64  
1
Vietnam  
Philippines  
Par. #  
1
36  
64  
1
36  
64  
1
2
3
6
6
6
6
6
4
50  
150  
43  
0
50  
150  
43  
0
50  
150  
43  
0
50  
150  
43  
0
50  
150  
43  
0
5
6
7
8
255  
60  
1
50  
60  
1
50  
60  
1
50  
60  
1
50  
60  
1
9
a
b
255  
18  
80  
15  
30  
18  
60  
4
15  
18  
80  
15  
30  
0
15  
18  
80  
15  
30  
0
15  
18  
80  
15  
30  
0
15  
18  
80  
15  
30  
0
c
d
e
f
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
1a  
1b  
1c  
1d  
1e  
1f  
20  
21  
22  
0
0
0
0
4
4
4
4
18  
60  
0
0
0
0
0
0
0
0
0
0
0
0
0
10  
0
80  
0
80  
0
80  
0
80  
0
5
5
5
5
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
12  
0
12  
0
12  
0
12  
0
12  
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging (continued)  
Table 15. The Country Specific Homologation Parameters (continued)  
Par. #  
23  
24  
25  
26  
27  
28  
29  
2a  
2b  
2c  
2d  
2e  
2f  
Canada  
Mexico  
India  
1
Vietnam  
Philippines  
1
1
1
1
0
5
0
5
0
5
0
5
0
5
50  
2
50  
2
50  
2
50  
2
50  
2
65  
1
65  
35  
65  
2
65  
35  
65  
2
65  
35  
65  
2
65  
35  
65  
2
255  
2
65  
1
65  
1
65  
1
65  
1
65  
1
255  
10  
0
255  
10  
0
255  
10  
0
255  
10  
0
255  
10  
0
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
3a  
3b  
3c  
3d  
3e  
3f  
3
3
3
3
3
0
0
0
0
0
1
1
1
1
1
255  
1
255  
1
255  
1
255  
1
255  
1
25  
1
25  
0
25  
0
25  
0
25  
0
2
2
2
2
2
0
0
0
0
0
0
0
0
0
0
5
1
1
1
1
43  
0
43  
0
43  
0
43  
0
43  
0
255  
10  
37  
50  
43  
0
30  
10  
37  
50  
43  
0
30  
10  
37  
50  
43  
0
30  
10  
37  
50  
43  
0
30  
10  
37  
50  
43  
0
40  
41  
42  
43  
44  
45  
46  
47  
48  
43  
0
43  
0
43  
0
43  
0
43  
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Commands for Homologation Testing and Debugging (continued)  
Par. #  
49  
Canada  
Mexico  
0x10  
India  
0x10  
Vietnam  
0x10  
Philippines  
0
0x10  
0x88  
0x80  
0x6b  
0x1e  
0x13  
0xcd  
0x00  
0x0c  
0x6b  
0x1e  
0x13  
0xcd  
0x00  
0x0c  
0x6b  
0x1e  
0x13  
0xcd  
0x00  
0x0c  
0x6b  
0x1e  
0x13  
0xcd  
0x00  
0x0c  
0x6b  
0x1e  
0x13  
0xcd  
4a  
4b  
4c  
4d  
4e  
4f  
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging (continued)  
Country Specific S Register Defaults  
Note: The values listed in Table 15 are typical values and change based on OEM preferences.  
Table 156. Country Specific Defaults for S Registers  
S Reg.  
Australia  
Belgium  
Denmark  
Finland  
France  
Germany  
s0  
s6  
000  
004  
050  
002  
020  
095  
000  
001  
000  
004  
050  
004  
020  
090*  
000  
001  
000  
004  
050  
002  
020  
090*  
000  
001*  
000  
004  
050  
004  
002  
090*  
000  
001*  
000  
002  
140  
002  
002  
090*  
000  
001  
000  
004  
050  
004  
020  
090*  
000  
001  
s7  
s8  
s10  
s11  
s30  
s35  
* Changing this value with the ATS command is not permitted.  
Table 16. Country Specific Defaults for S Registers (continued)  
S Reg. Netherlands  
Italy  
New Zeal.  
Norway  
Spain  
Sweden  
s0  
s6  
000  
005  
050  
002  
020  
090*  
000  
001*  
000  
004  
050  
002  
020  
090*  
000  
001  
000  
004  
050  
004  
015  
090  
000  
001  
000  
004  
050  
004  
009  
090*  
000  
001*  
000  
004  
050  
005  
020  
090*  
000  
001*  
000  
004  
050  
004  
020  
090*  
000  
001*  
s7  
s8  
s10  
s11  
s30  
s35  
* Changing this value with the ATS command is not permitted.  
Table 16. Country Specific Defaults for S Registers (continued)  
S Reg.  
Switzerland  
UK  
Austria  
Japan  
China  
Korea  
s0  
s6  
000  
004  
050  
004  
020  
090*  
000  
001  
000  
004  
050  
004  
020  
090  
000  
001  
000  
004  
050  
004  
020  
090*  
000  
001*  
000  
004  
050  
002  
020  
095  
000  
000  
000  
002  
050  
002  
020  
095  
000  
001  
000  
004  
045  
002  
020  
095  
000  
001  
s7  
s8  
s10  
s11  
s30  
s35  
* Changing this value with the ATS command is not permitted.  
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Data Addendum  
June 15, 1998  
Host-Based Controller Modem  
AT Command Set  
AT Commands for Homologation Testing and Debugging (continued)  
Table 16. Country Specific Defaults for S Registers (continued)  
S Reg.  
Malaysia  
Singapore  
Taiwan  
Thailand  
Indonesia  
Portugal  
s0  
s6  
000  
003  
035  
002  
020  
095  
000  
000  
000  
003  
035  
002  
020  
095  
000  
000  
000  
003  
050  
002  
020  
095  
000  
001  
000  
002  
050  
002  
020  
095  
000  
000  
000  
002  
050  
002  
020  
095  
000  
001  
000  
004  
050  
002  
002  
090*  
004  
001  
s7  
s8  
s10  
s11  
s30  
s35  
* Changing this value with the ATS command is not permitted.  
Table 16. Country Specific Defaults for S Registers (continued)  
S Reg.  
NA  
Ireland  
Hong Kong  
Mexico  
India  
Vietnam  
Philippines  
s0  
s6  
000  
002  
050  
002  
020  
095  
000  
000  
000  
004  
039  
004  
020  
090  
000  
001  
000  
002  
050  
002  
020  
095  
000  
001  
000  
002  
050  
002  
020  
095  
000  
000  
000  
002  
050  
002  
020  
095  
000  
000  
000  
002  
050  
002  
020  
095  
000  
000  
000  
002  
050  
002  
020  
095  
000  
000  
s7  
s8  
s10  
s11  
s30  
s35  
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Host-Based Controller Modem  
AT Command Set  
Data Addendum  
June 15, 1998  
AT Commands for Homologation Testing and Debugging (continued)  
Changing the DTMF Dial Speed Default Value  
To change the DTMF dial speed default value, follow these steps:  
1. Set par# 5 (Min DTMF dial speed) and par# 6 (Max DTMF dial speed) to the required DTMF dial speed with  
the AT%T21 command.  
2. Issue an ATZ command.  
3. Issue an ATS11? command to display the new value. The following example shows how to set the current  
default value from 80 to 85:  
ATS11?  
080  
OK  
AT%T21,5,55  
OK  
AT%T21,6,55  
OK  
ATZ  
OK  
ATS11?  
085  
OK  
If you do not want to change both par#5 and par#6, set par#5 to the new default DTMF duration if you are  
increasing the default value from the current value; otherwise, set par#6 to the new default DTMF duration.  
The following two example show how to set one parameter:  
1. This example shows how to set the current default value of S11 from 80 to 85:  
ATS11?  
080  
OK  
AT%T21,5,55  
OK  
ATZ  
OK  
ATS11?  
085  
OK  
2. This example shows how to set the current default value of S11 from 85 to 80:  
ATS11?  
085  
OK  
AT%T21,6,50  
OK  
ATZ  
OK  
ATS11?  
080  
OK  
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For additional information, contact your Microelectronics Group Account Manager or the following:  
U.S.A.:  
ASIA PACIFIC:  
JAPAN:  
Microelectronics Group, Lucent Technologies Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18103  
1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106), e-mail [email protected]  
Microelectronics Group, Lucent Technologies Singapore Pte. Ltd., 77 Science Park Drive, #03-18 Cintech III, Singapore 118256  
Tel. (65) 778 8833, FAX (65) 777 7495  
Microelectronics Group, Lucent Technologies Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku,Tokyo 141, Japan,  
Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700  
For data requests in Europe:  
MICROELECTRONICS GROUP DATALINE: Tel. (44) 1734 324 299, FAX (44) 1734 328 148  
For technical inquiries in Europe:  
CENTRAL EUROPE: (49) 89 95086 0 (Munich), NORTHERN EUROPE: (44) 1344 865 900 (Bracknell UK),  
FRANCE: (33) 1 47 67 47 67 (Paris), SOUTHERN EUROPE: (39) 2 6601 1800 (Milan) or (34) 1 807 1700 (Madrid)  
For Technical inquires in Taiwan:  
Microelectronics, Lucent Technologies Taiwan Modem Design Center (886) 2-547-7016  
ucent Technologies Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No  
ghts under any patent accompany the sale of any such product(s) or information.  
Copyright 1998 Lucent Technologies Inc.  
All Rights Reserved  
Printed in U.S.A.  
June 1998  
XX-XXXDMOD  
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