Ositech comm Network Card Trumpcard Data Fax Modem User Manual

Trumpcard Data/Fax Modem

User’s Guide and Reference

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Preface

This guide provides installation and operating instructions for the Ositech

Trumpcard 33600 or 28800 Data/Fax Modem PC Card.

The Trumpcard Modem is a PCMCIA Type II Modem with no external

controls or indicators. To operate the Modem, you require a

communications software package.

‘PCMCIA Card’ and ‘PC Card’ are used interchangeably throughout this

manual. Both terms refer to the Ositech Trumpcard Data/Fax Modem PC

Card.

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FCC Notice

This equipment has been tested and found to comply with the limits for a

Class B digital device, pursuant to Part 15 of the FCC Rules. These limits

are designed to provide reasonable protection against harmful

interference in a residential installation. This equipment generates, uses

and can radiate radio frequency energy and, if not installed and used in

accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not

occur in a particular installation. If this equipment does cause harmful

interference to radio or television reception, which can be determined by

turning the equipment off and on, the user is encouraged to try to correct

the interference by one or more of the following measures:

•

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and the receiver.

Connect the equipment into an outlet on a circuit different from

that to which the receiver is connected.

•

Consult the dealer or an experienced radio or television technician

for help.

Modifications

The FCC requires the user be notified that any changes or modifications

made to this device that are not expressly approved by Ositech

Communications Inc. may void the user’s authority to operate this

equipment.

Operating Conditions

This device complies with Part 15 of the FCC Rules. Operation is subject

to the following two conditions:

•

This device may not cause harmful interference, and

This device must accept any interference received, including

interference that may cause undesired operation.

Canadian Electromagnetic Compatibility Advisory

This Class B digital apparatus meets all requirements of the Canadian

Interference Causing Equipment Regulations.

Conseil sur la compatibilité des Electromagnétiques,

pour le Canada

Cet appareil numérique de la classe B respecte toutes les exigences du

Règlement sur le matériel brouilleur du Canada.

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U.S. Regulations Governing the Use of Modems

This equipment complies with Part 68 of the FCC rules. Located on the

Modem is a label that contains, among other information, the FCC

Registration Number and Ringer Equivalent Number (REN) for this

equipment. Upon request, you must provide this information to your

telephone company.

The REN is useful to determine the quantity of devices you may connect to

your telephone line and still have all of those devices ring when your

telephone number is called. In most, but not all, areas the sum of the

RENs of all devices connected to one line should not exceed five (5.0). To

be certain of the number of devices you may connect to your telephone

line, as determined by the REN, you should contact your local telephone

company to determine the maximum REN for your calling area. The REN

for this device is 0.7B.

If your telephone equipment causes harm to the telephone network, the

telephone company may discontinue your service temporarily. If possible,

they will notify you in advance. But, if advance notice is not practical, you

will be notified as soon as possible. You will also be informed of your right

to file a complaint with the FCC.

Your telephone company may make changes in its facilities, equipment,

operations, or procedures that could affect the proper functioning of your

equipment. If they do, you will be notified in advance to give you an

opportunity to maintain uninterrupted telephone service.

If you experience trouble with this telephone equipment, contact your local

telephone company for information on obtaining service or repairs. The

telephone company may ask that you disconnect this equipment from the

network until the problem has been corrected or until you are sure that the

equipment is not malfunctioning.

This equipment may not be used on coin service provided by the

telephone company. Connection to party lines is subject to state

tariffs.Canadian Regulations Governing the Use of Modems

Canadian Regulations Governing the Use of Modems

Note:

The Canadian Department of Communications label identifies certified

equipment. This certification means that the equipment meets certain

telecommunications network protective, operational, and safety

requirements. The Department does not guarantee the equipment will

operate to the user’s satisfaction.

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Before installing the equipment, ensure that it is permissible to be

connected to the facilities of the local telecommunications company. The

equipment must also be installed using an acceptable method of

connection. In some cases, the company’s inside wiring associated with a

single line individual service may be extended by means of a certified

connector assembly (telephone extension cord). Be aware that the above

conditions may not prevent degradation of service in some situations.

Repairs to certified equipment should be made by an authorized

Canadian maintenance facility, designated by the supplier. Any repairs or

alterations made by the user to this equipment, or equipment

malfunctions, may give the telecommunications company cause to

request that the equipment be disconnected.

Make sure, for their own protection, that the electrical ground connections

of the power utility, telephone lines and internal metallic water pipe

system, if present, are connected together. This precaution may be

particularly important in rural areas.

Caution:

Users should not attempt to make such connections themselves,

but should contact the appropriate electric inspection authority, or

electrician, as appropriate.

The Load Number (LN) assigned to each terminal device denotes the

percentage of the total load to be connected to a terminal loop which is

used by the device, to prevent overloading. The termination on a loop may

consist of any combination of devices, subject only to the requirement that

the total of the Load Numbers of all devices does not exceed 100. An

alphabetic suffix is also specified in the Load Number for the appropriate

ringing type (A or B), if applicable. For example, LN=20 A designates a

Load Number of 20 and an “A” type ringer.

The Load Number for this device is 6.

For information on the location of the authorized Canadian maintenance

facility nearest you, contact:

Ositech Communications Inc.

679 Southgate Drive

Guelph, Ontario, Canada

N1G 4S2

Telephone (519) 836-8063

Facsimile (519) 836-6156

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This product contains inactivated SPECTRUM CONNECTED

cellular

data communication technology, which requires a use license from

Spectrum Information Technologies, Inc. No such license is provided with

this product and activation without a use license is prohibited.

This product contains SPECTRUM CONNECTED

cellular data

communication technology, which can be activated for data

communication over a cellular network when a license is obtained from

SPECTRUM, and the product is combined with an appropriate cellular

telephone driver and corresponding cable compatible with popular

brands of cellular telephones. To obtain a license and to determine the

availability of an appropriate driver and cable for a cellular telephone,

contact Ositech Communications, Inc.

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Contents

Section One

Introduction

1-1

Features................................................................................................................ 1-2

Data Mode......................................................................................................... 1-2

Facsimile Mode ................................................................................................. 1-3

Cellular Mode .................................................................................................... 1-3

Unique Features ............................................................................................... 1-4

Industry Standards ............................................................................................... 1-5

Section Two

Hardware Installation

2-1

Preparing for Installation ...................................................................................... 2-1

Installing the Trumpcard Modem .................................................................... 2-2

Connecting to the Telephone Network with a Direct Cable Connection ........... 2-3

Connection to the Telephone Network through the Line Interface Module ....... 2-4

Section Three

Basic Operation

3-1

Before You Begin ................................................................................................. 3-2

Enabling The Trumpcard ................................................................................. 3-2

Operating the Trumpcard .................................................................................... 3-3

Using AT Commands ...................................................................................... 3-3

Making an Outgoing Call .................................................................................. 3-4

Re-Dialling the Last Number ........................................................................... 3-5

Storing a Number ............................................................................................. 3-5

Connection Messages ..................................................................................... 3-5

Ending Your Connection .................................................................................. 3-7

Setting Up for a Non-Error Correcting Connection ......................................... 3-7

Receiving an Incoming Call ............................................................................. 3-8

Setting up for a Cellular Connection ............................................................... 3-8

ModemConfigurationsforCellularOperation................................................... 3-9

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Section Four

Modem Command Reference

4-1

Modem Command Guidelines .............................................................................. 4-2

Modem Command Summary ............................................................................... 4-4

Modem Command Descriptions ........................................................................... 4-6

Modem S Registers ...........................................................................................4-34

Default Register Settings ............................................................................... 4-34

Modem Register Summary ............................................................................... 4-35

Facsimile Commands....................................................................................... 4-45

Class 1 Commands....................................................................................... 4-45

Class 2 Commands....................................................................................... 4-45

Section Five

Modem Test Procedures

5-1

Local Modem Self-Test ........................................................................................ 5-2

Local Analog Loopback ........................................................................................ 5-3

Local Analog Loopback with Self-Generated Pattern ......................................... 5-4

Remote Digital Loopback ..................................................................................... 5-5

Remote Digital Loopback with Self-Generated Pattern....................................... 5-6

Local Digital Loopback ......................................................................................... 5-7

Testing Modem Memory ....................................................................................... 5-8

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Introduction

Section One

Introduction

Congratulations on your choice of an Ositech Trumpcard Data/Fax

Modem! We believe you will find it a superior quality product that will

meet or exceed your facsimile and data communication needs.

The Trumpcard Modem can be used with most standard

communications and facsimile packages. Refer to the communications

package documentation for instructions to set up and configure your

communications software to take advantage of the Trumpcard

Modem’s features.

This section lists the features of the Trumpcard Modem, briefly

describes a number of industry standards, and provides basic

instructions for getting started with your Trumpcard Modem.

•

Features

Industry Standards

Before You Begin Dialling

Communicating With the Trumpcard Modem

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Section One

Features

Data Mode

The Trumpcard Modem fully supports the following industry and ITU-T

(formerly CCITT) standards.

•

V.FC, ITU-T: V.34 33.6+28.8, V.32bis, V.32, V.22bis, V.22, V.23,

V.21, and Bell 103/212A operation

•

Data rate adaptation to 230400, 115200, 57600, 38400, 28800,

26400, 24000, 21600, 19200, 14400, 12000, 9600, 7200, 4800, 2400,

1200, and 300 bps

•

Enhanced “AT” compatible command set

ITU-T V.42 LAPM error correction protocol

MNP 2, 3, and 4 error correction protocol

MNP 10 Error correction protocol for cellular communications

ITU-T V.42bis data compression

MNP Class 5 data compression

Adaptive packet assembly

Automatic feature negotiation

V.42 and MNP negotiation

Automatic speed adjust

Full or half duplex transmission

Automatic dial, re-dial, and answer

Pulse or tone dialling

Call progress detection

Line quality receive level monitoring

Diagnostics

Compatible with off-the-shelf communications/facsimile packages

Synchronous communications using Hayes AutoSync

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Introduction

Facsimile Mode

The Trumpcard facsimile supports Class 1 and Class 2 AT fax

commands for facsimile communications. To use the facsimile, you

must have a facsimile communications software package.

•

Group 3 facsimile send/receive speeds of 14400, 9600, 7200, 4800,

and 2400 bps

•

ITU-T V.17, V.29, and V.27ter

Facsimile Class 1 command set compatible with EIA/TIA 578

Facsimile Class 2 command set compatible with proposed EIA/TIA

592

Cellular Mode

The Trumpcard Modem has an optional cellular kit that allows the

Modem to connect to a variety of cellular phones. For an up-to-date list

of the cellular phones currently supported please contact Ositech.

Cellular phones supported:

•

AT&T

3610, 3710, 3730, 3760

DT-20x, DT-22x

DIAMOND TEL

MITSUBISHI

MOTOROLA

3500, 4000, 4500, 5000, D100

Micro Digital Lite, MicroTAC Ultralite,

MicroTAC Lite, MicroTAC Alpha

•

NEC

OKI

P110, P120, P180, P200, P201, P300, P301

900, 910, 1145, 1150

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Section One

Unique Features

The Trumpcard Data/Fax Modem has a number of unique features,

designed to integrate with today’s portable and laptop technology, and

computer user’s needs.

•

Power conservation modes (including sleep mode)

Automatic wake-up on incoming call

16550 Compatible COM Port

Field upgradeable firmware

Available as a stand-alone or as a multi-function PCMCIA Type II

PC Card

•

Automatic adaptation for Landline or Cellular operation

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Introduction

Industry Standards

V.21

V.21 refers to a standard set by ITU-T for 300 bps Modem

communications. North American manufactured modems usually follow

the Bell 103 standard.

V.22

V.22 refers to the standard set by ITU-T for 1200 bps Modem

communications. The V.22 standard is compatible with the Bell 212A

standard used in North America.

V.22bis

V.22bis refers to the standards set by ITU-T for 2400 bps Modem

communications.

V.23

V.23 refers to the standards set by ITU-T for 1200 bps Modem

communications with a 75 bps back channel. V.23 is primarily used in

the U.K.

V.32

V.32 refers to the standard set by ITU-T for 9600 and 4800 bps Modem

communications.

V.32bis

V.32bis refers to the standard set by ITU-T for 14,400, 12,000, 9600,

7200, and 4800 bps Modem communications.

V.34

V.34 refers to the standard set by ITU-T for 28,800 to 2400 bps Modem

communications.

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Section One

V.42

V.42 refers to the standard set by ITU-T for error control protocol. The

V.42 standard also supports the MNP error correction protocol standard.

V.42bis

V.42bis refers to the standard set by ITU-T for data compression. Data

compression can only be used in conjunction with error correction.

MNP 2, 3, and 4

MNP 2, 3, and 4 refers to an alternate standard for error correction

protocol.

MNP 10

MNP 10 refers to a error correction protocol often used in harsh

environments (cellular use)

MNP 5

MNP 5 refers to an alternate standard for data compression.

V.17

V.17 refers to the standards set by ITU-T for 14400, 12000, 9600 and

7200 bps facsimile communications

V.29

V.29 refers to the standards set by ITU-T for 9600 and 7200 bps facsimile

communications.

V.27ter

V.27ter refers to the standards set by ITU-T for 4800 and 2400 bps

facsimile communications.

V.FC

V.FC refers to Rockwell’s proprietary Modem communications standard

for 28800, 26400, 24000, 21600, 19200, 16800, and 14400 bps

communications.

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Hardware Installation

Section Two

Hardware Installation

Follow the instructions to unpack and install the Trumpcard Modem on

your computer.

Preparing for Installation

To install the Trumpcard Modem, you require the accompanying

diskettes and the following items:

• A computer equipped with a PCMCIA Release 2.x, Type II PC

Card slot.

• PCMCIA Card and Socket Services Version 2.x or higher,

installed. This is optional since the Trumpcard can be operated

without Card and Socket Services.

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Section Two

Installing the Trumpcard Modem

The Trumpcard Modem can be inserted into a computer whether the power

is ON or OFF.

Follow these steps:

•

Orient the Trumpcard Modem so that the 68-pin connector is next to

the PCMCIA slot of the computer.

•

Insert the Trumpcard Modem into the slot until it is firmly seated.

Note:

These are general installation instructions that apply to most

computers. Please refer to the manual accompanying your computer

for any additional instructions on installing PCMCIA PC Card adapters.

The Trumpcard Modem is keyed to go in one way only. If you feel

resistance before the it is fully inserted, remove it, turn it over, and re-

insert it.

Installing the Trumpcard

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Hardware Installation

Connecting to the Telephone Network with

a Direct Cable Connection

The Trumpcard Modem may be directly connected to either a standard

land based telephone line or to a cellular telephone using the cellular

option kit. For cellular installation, refer to the installation instructions

accompanying the cellular option kit.

To directly connect the Trumpcard to a standard land based

telephone line follow these steps:

• Locate the modular cable that has a male RJ-12 connector at one

end and a PCMCIA Modem Adapter connector at the other.

• For a multi-function Trumpcard, the Modem connection is identified

on the back of the PC Card; insert the PCMCIA Modem adapter

connector into the one marked Modem.

• Connect the male RJ-12 connector into the telephone line outlet. If

you wish to have both a telephone and the Trumpcard Modem

connected to a single telephone line outlet, then a telephone

Y-connector is required.

Note:

The PCMCIA Modem Adapter connector is keyed to go in one way

only. If you feel resistance before the connector is fully inserted,

remove the connector, turn it over, and re-insert it.

Direct Cable Connection to Telephone Network

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Section Two

Connecting to a Telephone Network

through the Line Interface Module

The Trumpcard Modem may be connected to a variety of telephone

networks using the Line Interface Module, and the appropriate Adapter

Cable. Contact Ositech for the latest list of countries supported.

To connect the Trumpcard Modem to your telephone service using the

Line Interface Module, follow these steps:

• Locate the Line Interface Module that has a PCMCIA Modem

Adapter at one end.

• For a multi-function Trumpcard, the Modem connection is identified

on the back of the PC Card; insert the PCMCIA Modem Adapter

connector into the one marked Modem.

• Connect the Trumpcard Modem to your telephone service

connection via the Line Interface Module, using the interconnecting

cable and adapter approved for use in your country.

Note:

The PCMCIA Modem Adapter connector is keyed to go in one way

only. If you feel resistance before the connector is fully inserted,

remove the connector, turn it over, and re-insert it.

Line Interface Module Connection to Telephone Network

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Basic Modem Operation

Section Three

Basic Modem Operation

This section provides basic instructions for getting started with

your Modem.

•

Before You Begin

Operating the Trumpcard Modem

Using AT Commands

Making an Outgoing Call

Re-Dialling the Last Number

Storing a Number

Connection Messages

Ending Your Connection

Setting up for a Non-Error Correcting Connection

Receiving an Incoming Call

Setting up for a cellular connection

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Section Four

BeforeYou Begin

Before you begin using the Modem, you should configure your

communications software to work with the Trumpcard. For specific

configuration instructions, refer to the documentation that came with

your communications software.

You will likely require the following information:

•

Communications Port: The Trumpcard is compatible with

either Com1, COM2, COM3 or COM4, and is dependant on the

enabling software.

Modem Type: Your communications software may have drivers for

specific manufacturers of modems. If the Trumpcard is not listed,

choose a driver for a Generic AT compatible Modem, or refer to

the diskettes provided for Modem script files.

Before you start to dial out, you may want to take a moment to find out

the maximum speed of the remote Modem, and whether it supports

error correction or not. Knowing this may help you later if you have

communications problems.

Enabling The Trumpcard

The Trumpcard Modem, whether singular or part of a multi-function PC

Card, has been configured such that it will be recognized and enabled

as a Modem when used with a computer running Card and Socket

Services, with a Generic Enabler. The Modem will be fully functional,

and its configuration will be determined by the settings set for the

Generic Enabler. In this mode of operation any other functions provided

by the Trumpcard will not be operational. Refer to the Installation Guide

accompanying a multi-function Trumpcard for more details on how to

operate all functions.

For operating systems that do not support PCMCIA equipped

computers, the Trumpcard Modem can still be used by making use of

the many Trumpcard enablers provided by Ositech. For a multi-function

Trumpcard, refer to the Installation Guide accompanying the PC Card

for details on which operating systems are supported. For a Trumpcard

Modem only product, refer to the diskettes provided with the

Trumpcard.

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Basic Modem Operation

Operating the Trumpcard

Using AT Commands

In order to communicate with the Modem, the Modem must be in

command mode. In addition, you must have your communications

software operating and communicating interactively with the Modem. The

Trumpcard will automatically be in command mode after you turn on your

computer.

Any commands you issue to the Trumpcard must be prefixed with AT (or

at). The only exception to the “AT” prefix rules are the re-execute (A/)

command and the escape code (initially +++).

It is not necessary that commands be entered after the “AT” sequence, but

you must send a carriage return [RETURN] or [ENTER] key at the end of

the command line.

The Trumpcard automatically senses the speed and data format of your

communications package provided it is set to one of the following formats:

•

Speed: 110, 300, 600, 1200, 2400, 4800, 7200, 9600,

19200, 38400, 57600 or 115200

•

Data Format

Data Bits

Parity

even or odd

none

Stop Bits

1 or 2

mark or space

even or odd or none

1 or 2

A command line may contain a single command or a series of commands.

You can separate multiple commands with spaces for readability if you

like. The “AT” prefix is only required once at the beginning of the

command line. The command line may contain up to 41 characters. You

can edit the command line using the backspace key and entering the new

command. (You will not be able to edit the “AT” prefix once you enter it. If

you begin to enter a command and change your mind, use the backspace

key to remove the command up to the “AT” prefix and press [ENTER]).

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Section Four

Making an Outgoing Call

To make an outgoing call manually, enter:

ATD 234 3456 [ENTER]

Where 234 3456 is the telephone number of the remote Modem. Spaces

on the command line are ignored by the Modem.

There are a number of options that you can add to the dial command.

Some of the more common are listed here. Refer to the ATD command for

more information.

Tone or Pulse Dialling

To force either tone (touch tone) or pulse (rotary) dialling, include a T (for

tone) or P (for pulse) after the ATD command but before the telephone

number. You can set the default mode using the ATT or ATP command.

For example, to set the default to tone dialling, enter:

ATDT 234 3456 [ENTER]

Wait for Dial Tone

This command instructs the Modem to wait for a given period (usually 30

seconds) to detect dial tone before dialling the telephone number. To wait

for dial tone, enter a W just before the telephone number. You can also

instruct the Modem to wait for a second dial tone by inserting the W in the

sequence of numbers. For example:

ATDT9W 234 3456 [ENTER]

Dial Delay

With some telephone systems, you may need to insert a brief pause

between digits in the telephone number. (The most common example is

when you need to dial 9 for an outside line, wait a moment, then continue

your dialling.) To do this, insert a comma in the telephone number where

the delay should occur. For example:

ATDT 9,234 3456 [ENTER]

The default delay is two seconds but can be adjusted with the S8 register.

Note:

The above two examples accomplish similar results through different

commands; “ATDT9W” dials 9 and then waits for a dial tone before

continuing, where “ATDT 9,” dials 9, waits a couple seconds and then

dials whether there’s a tone or not.

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Basic Modem Operation

Re-Dialling the Last Number

To re-dial the last number you called, enter:

ATDL [ENTER]

Storing a Number

If there are some numbers that you call regularly, you may want to store

them so that you do not have to enter the whole number every time you

call. You can store up to four numbers (in locations 0-3). Each number can

be up to 36 characters long.

To store the number 1-999-555-1212 in storage location 3, enter:

AT&Z3=19995551212[ENTER]

Dialling a Stored Number

To dial 1-999-555-1212 (that you stored as number 3), enter:

ATDS=3 [ENTER]

Connection Messages

Once you connect to the remote Modem, your Modem will respond with

one of the following messages. (If the remote Modem responds with

garbled characters or seems to have locked up, refer to Setting Up For a

Non-Error Correcting Connection before you try again.)

The Modem may respond with a short form (numeric code) or a long form

(prompt). Refer to the ATXn command description in Section Three to

control how the Modem responds.

Short

Long

Description

Form

CONNECT

RING

command successful

connection at 300 bps

incoming call

NO CARRIER

ERROR

no carrier detected

invalid command

CONNECT 1200

NO DIAL TONE

BUSY

NO ANSWER

CONNECT 0600

CONNECT 2400

CONNECT 4800

connection at 1200 bps

no dial tone detected

remote Modem line is busy

remote Modem did not answer call

connection at 600 bps

connection at 2400 bps

connection at 4800 bps

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Section Four

Short

Long

Description

Form

CONNECT 9600

CONNECT 7200

CONNECT 12000

CONNECT 14400

CONNECT 19200

CONNECT 38400

CONNECT 57600

CONNECT 115200

connection at 9600 bps

connection at 7200 bps

connection at 12000 bps

connection at 14400 bps

connection at 19200 bps

connection at 38400 bps

connection at 57600 bps

connection at 115200 bps *

CONNECT 75TX/1200RX originated a connection with

Modem supporting V.23

CONNECT 1200TX/75RX answered a connection with

Modem supporting V.23

FAX

DATA

CARRIER 300

CARRIER 1200/75

fax mode connection

data mode connection

carrier signal detected at 300 bps

V.23 backward channel carrier

detected

CARRIER 75/1200

V.23 forward channel carrier

detected

CARRIER 1200

CARRIER 2400

CARRIER 4800

CARRIER 7200

CARRIER 9600

carrier signal detected at 1200 bps

carrier signal detected at 2400 bps

carrier signal detected at 4800 bps

carrier signal detected at 7200 bps

carrier signal detected at 9600

bps

CARRIER 12000

CARRIER 14400

CARRIER 16800

CARRIER 19200

CARRIER 21600

CARRIER 24000

CARRIER 26400

CARRIER 28800

CARRIER 16800

CONNECT 21600

carrier signal detected at 12000

bps

carrier signal detected at 14400

bps

carrier signal detected at 16800

bps *

carrier signal detected at 19200

bps *

carrier signal detected at 21600

bps *

carrier signal detected at 24000

bps *

carrier signal detected at 264000

bps *

carrier signal detected at 28800

bps *

carrier signal detected at 16800

bps *

connection at 21600 bps *

* Only applicable to Trumpcard 28800 version

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Basic Modem Operation

Description

Short

Form

Long

Form

CONNECT 24000

CONNECT 26400

CONNECT 28800

connection at 24000 bps *

connection at 26400 bps *

connection at 28800 bps *

COMPRESSION CLASS 5 MNP data compression

COMPRESSION V.42BIS V.42bis data compression

COMPRESSION NONE

PROTOCOL NONE

no compression

connection with Modem that does

not support MNP or V.42

connection with Modem that

supports V.42

connection with Modem that

supports MNP

PROTOCOL: LAP-M

PROTOCOL: ALT

PROTOCOL: ALT - CELLULAR

connection with Modem that

supports MNP-10

*Only applicable to Trumpcard 28800 version

Ending Your Connection

To end your connection, log off the remote system (if applicable), enter the

escape sequence (+++), and issue the ATH command.

You may want to wait 30 seconds or so after your last transmission before

disconnecting to ensure any data in the Modem buffer has cleared.

Setting Up for a Non-Error Correcting

Connection

The Trumpcard Modem supports the V.42 and MNP error correction

protocol as its default mode. When you initiate a connection from your

Trumpcard Modem to a remote Modem not supporting error correction,

the remote system may respond with garbled characters or even lock up.

If the remote Modem does not support error correction, the Trumpcard

continues the connection without error correction or data compression.

However, as mentioned, the remote system may have already locked up.

In these cases, you must break the connection, turn off error correction on

the Trumpcard, and place your call again.

To turn off error correction for the Trumpcard, use the AT&Q6 command. If

you wish to make this (non-error correcting) the default setting, follow the

AT&Q6 command with the AT&W command.

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Section Four

Receiving an Incoming Call

Your communications software may be able to accept incoming calls

automatically or semiautomatically. Refer to your communications

software documentation for information.

If your communications software can not automatically accept incoming

calls, start your communications software and follow these instructions to

receive a call.

You can set your Trumpcard Modem to auto-answer incoming calls using

the S0 register. The S0 register contains the number of rings before

answering and can be any number from 0 to 255 (Zero rings means do

not answer).

If the Modem is not set to auto-answer and an incoming call arrives, the

Modem will respond with a RING prompt. To answer the call, enter:

ATA [ENTER]

This tells the Modem to respond with a carrier signal. Once the connection

is established, the Modem will prompt with CONNECT.

Setting up for a Cellular Connection

The Trumpcard Modem with the cellular option supports direct connection

to cellular phones, eliminating the need for other intelligent interfaces.

In order to set up the Trumpcard Modem to recognize and control the

cellular phone you are using, software provided with the optional cellular

kit must be uploaded to the Modem. Once the software is uploaded, the

cellular operation is transparent to any communications software you may

be using.

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Basic Modem Operation

Modem Configurations for Cellular Operation

The Trumpcard’s performance will be improved by modifying the standard

(factory default) configuration. For reliable communications, it is also

recommended that the Modem to which you are connecting also be

MNP10 compatible. Using a MNP10 link will allow negotiation of the

Modem link speeds based on current line conditions.

For a MNP10 to MNP10 link negotiation at 1200 bps the Trumpcard

initialization string would be:

AT&F&C1&D2S95=44)M1*H1:E0

The other Modem, if a landline based Modem, can be initialized with:

AT&F&C1&D2S95=44

In this configuration the modems will first establish a MNP10 link at 1200

bps. They will then make a step up to 4800 bps and then step up to a final

speed based on the line conditions. The total connect time for this method

can be up to 60 seconds.

For a MNP10 to MNP10 link negotiation at 4800 bps (quick connect) the

Trumpcard initialization string would be:

AT&F&C1&D2S95=44)M1*H2:E0.

The other Modem if a landline based Modem can be initialized with

AT&F&C1&D2S95=44)M1@M18

In this configuration the modems will first establish a MNP10 link at 4800

bps and then step up to a final speed based on the line conditions. The

total connect time for this method can be up to 40 seconds.

For connecting to modems that do not support MNP10 the Trumpcard

initialization string would be

AT&F&C1&D2S95=44:E0%E2

which will result in the Trumpcard trying to establish the best possible link

speed. If it is found that connections cannot be reliably made, then it may

be necessary to force the Trumpcard connection to 4800 bps using the

initialization string

AT&F&C1&D2S95=44:E0%E2F6.

Note:

Refer to the [n command for details on how to combine cellular and

land based initialization strings.

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Section Four

Cellular Phone Configuration

The placement of the cellular phone and antenna is critical to the success

of the communications session. The antenna placement should be

adjusted until the maximum signal strength is observed on the cellular

phone signal indicator. Under some circumstances a special high gain

antenna may improve performance.

Additional information regarding the use of the cellular phone and cellular

network should be obtained from the service provider or cellular phone

manufacturer.

Outgoing Cellular Call

From a communications software standpoint, making an outgoing call

using cellular or a landline differs only in the initialization string. Once the

cellular driver has been uploaded the Modem will dynamically switch

between cellular operation and landline operation.

Whenever the Modem is instructed to make an outgoing call (i.e ATD

command), it will determine if it is possible to make a cellular call; if it’s

not, it will revert to a landline based call. As the user, it is up to you to

ensure that cellular conditions (cellular cable is connected, cellular phone

is powered on, etc) are ready for operation prior to instructing the Modem

to make an outgoing call.

The initialization string sent to the Trumpcard for cellular connections may

not result in the optimum connection when used for landline connections.

If possible, set the communications software to send the desired

initialization string based on the type of connection being used.

Refer to the section Making an Outgoing Call for details on how to

command the Modem to make outgoing calls

Incoming Cellular Call

The Trumpcard is capable of receiving incoming cellular Modem calls.

From a communications software standpoint, receiving an incoming call

using a cellular or a landline link differs only in the initialization string.

Once the cellular driver has been uploaded, the Modem will dynamically

switch between cellular operation and landline operation.

Whenever a cellular phone connection exists between the Trumpcard and

the cellular phone, only incoming calls from the cellular phone will be

detected. If a cellular phone connection does not exist it will revert to

monitoring for landline based incoming calls.

As the user, it is up to you to ensure that the cellular environment (cellular

cable is connected, cellular phone is powered on, etc) is ready for

operation prior to accepting incoming cellular Modem calls.

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Basic Modem Operation

The initialization string sent to the Trumpcard for cellular connections may

not result in the optimum connection when used for landline connections.

If possible, set the communications software to send the desired

initialization string based on the type of connection being used.

Refer to the section Receiving an Incoming Call for details on how to

command the Modem to receive incoming calls.

Cellular Call Status

The Trumpcard provides a method of determining if the cable connection

to the cellular phone is operational. The AT^T6 command is used for this

purpose and returns a decimal number representing the current status.

The bit map for the status byte is:

Bit #

Description

Cellular phone is receiving an incoming call

Cellular phone is in use

Cellular phone is locked

There is no service for cellular phone

Cellular phone is powered on

Cellular driver is initialized

–

Cellular cable detected

The bit map values have to be converted from binary to decimal. The most

common values are:

160 Cellular cable is detected and driver is initialized.

176 Cellular cable detected, driver is initialized and phone is

powered on. (This state is required to place a call.)

178 Cellular cable detected, driver is initialized, phone is powered

on and cellular phone in use.

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Section Four

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Modem Command Reference

Section Four

Modem Command Reference

This section of the manual describes the AT commands that the

Trumpcard modem supports. This information includes command

parameters, defaults, result codes, and often examples.

These commands cannot be entered (and sent) to the modem from the

operating system command line. You must use a communications

software package to talk to the modem. Your communications software

may handle all of the communications with the modem for you — you may

never have to issue an AT command yourself. Refer to your

communications software documentation for more information.

Also included in this section is a list of the S registers and their functions.

At the end of the section is a list of the facsimile commands supported by

the Trumpcard data/fax modem. These commands appear for reference

only — you cannot operate the facsimile manually.

•

Modem Command Guidelines

Modem Command Summary

Modem Command Descriptions

Modem S Registers

Default Register Settings

Modem Register Summary

Facsimile Commands

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Section Four

Modem Command Guidelines

Each of the following modem command descriptions has a list of

possible parameters with their default values. The modem loads the

default values at initialization (when you turn the power on or you issue

the ATZ command). If you exclude a mandatory parameter, the modem

assumes a zero value. Invalid commands or parameters return the

ERROR message.

The command line may contain a single command or a series of

commands. You can separate commands with a space for readability,

but, the command line can not exceed 41 characters. The modem

performs the command after you send a terminating character. The

default terminator is carriage return (ASCII 013), but you can change this

by writing to register S3.

You can edit the command line using the backspace character (ASCII

008); change this by writing to register S5. However, the backspace can

not be 0, greater than 127, or the terminating character.

All command lines begin with AT (in capital or lower case letters). A

command line can be terminated at any time by issuing CTRL-X (ASCII

018). The modem will ignore the command line and return an OK

message. You can use A/ to repeat the last command line. The A/ does

not require a terminating character.

An escape code sequence (+++) returns the modem to the command

mode from the data mode. There must be a time delay between the last

character transmitted and the first character of the escape code. You can

change the delay by writing to register S12; (default 1 second). The

escape code character must occur three times in succession for an

escape.

Parameters that are entered for the AT and the AT& commands are

limited in value to 0-255, where the parameter is "MOD"ed with 256. The

result must be within the specified range; if it is not, the modem returns

an ERROR message.

Parameters entered for an S register are also "MOD"ed with 256.

Parameters that are out of range are stored in the S register, however, no

ERROR message is reported. Functionally the lower or higher register

limit is used.

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Modem Command Reference

If you enter a parameter for the AT\ or AT% commands that is out of range,

the upper limit is stored and no ERROR message is reported.

Following the modem command description assume OK and ERROR as

valid responses for almost all of the commands. Other valid responses

for a command, if any, are discussed with the command descriptions.

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Section Four

Modem Command Summary

Command Title

Default

none

1 *

Re-execute Command

Answer

Set ITU-T or Bell Mode

Dial

Command Echo

1 *

Select Line Modulation (14400)

Select Line Modulation (28800)

Switch-Hook Control

Identification

none

2 *

+MS

Speaker Volume

Speaker Control

1 *

Automode Detection

Return To The On-Line State

Set Pulse Dial As Default

Result Code Display

Reading/Writing S Registers

Set Tone Dial As Default

Result Code Form (Message Control)

Connect Message Control

Extended Result Codes

Control Long Space Disconnect

Reset

1 *

none

0 *

none

1 *

0 *

4 *

0 *

none

0 *

none

0 *

3 *

0 *

&Cn

&Dn

&Gn

&Jn

&Kn

&Ln

DCD Option

DTR Option

Restore Factory Configuration

Set Guard Tone

Telephone Jack Selection

DTE/Modem Flow Control

Line Type

* Indicates command is saved in Non-Volatile Memory

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Modem Command Reference

Command Title

Default

(&Qn) *

0 *

&Mn

&Pn

&Qn

&Rn

&Sn

&Tn

Communication Mode

Dial Pulse Ratio

Communication Mode

RTS/CTS Option

DSR Option

5 *

0 *

Test And Diagnostic

4 *

View Configuration and User Profiles

Store User Profile

none

0 *

none

&Wn

&Yn

&Zn=x

\Bn

Designate Default User Profile

Store Phone Number

Transmit Break

\Gn

Modem-to-Modem Flow Control

Break Control

\Kn

\Nn

Operation Mode Control

Compression Control

none

1 *

%Cn

%En

Disable/Enable Line Quality Monitor

Report Received Signal Level

Report Line Signal Quality

MNP Extended Services

Link Negotiated Speed

Transmit Level Adjust for Cellular

Connection

none

-Kn

*Hn

)Mn

0 *

:En

@Mn

Compromise Equalizer

Initial Cellular Power Level

Event Based Command

None

* Indicates command is saved in Non-Volatile Memory

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Section Four

Modem Command Descriptions

A/ — Re-execute

Parameters

Default

none

Re-executes the most recent AT command string. The principle

application of this command is to place another call (e.g., Dial command)

that failed, to connect due to a busy line, no answer, or a wrong number.

This command must appear alone on a command line and must be

terminated by the "/" character. (An [ENTER] should not be entered to

terminate the command.)

A — Answer

Parameters

Default

none

This must be the last command entered into the command line. The

modem proceeds with the connect sequence in answer mode. The

modem will enter the connected state after exchanging carrier with the

remote modem. If no carrier is detected within a wait period specified in

further characters entered during the connect sequence will abort the

command.

Result Codes

CONNECTXXXX

If a connection is established (XXXX = telco line

speed, e.g. 2400)

NO CARRIER

If a connection cannot be established, the abort

timer (register S7) expires, or if the command is

aborted

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Modem Command Reference

Bn — Set ITU-T or Bell Mode

Parameters

Default

0, or 1

Selects between ITU-T and Bell modes for a 1200 bps connection.

Examples

ATB0

Selects ITU-T V.22bis and V.22 standards for

communication at 2400 bps and 1200 bps.

ATB1

Selects Bell 212A for communication at 1200 bps

Dn — Dial

Parameters

Default

0-9 A B C D * # L P T R & ! @ W , ; ^ S=n

This must be the last command on a command line. ATD causes the

modem to go off-hook, dial according to the parameters entered, and

attempt to establish a connection. If there are no parameters, then the

modem goes off-hook in originate mode without dialling the number.

Punctuation may be used for clarity. Parentheses, hyphens and spaces

are ignored. If an invalid character is entered, that character and all

subsequent characters in the dial string are ignored. The modem

truncates dial strings to 40 characters.

The ATD Parameters are:

Dials the last dial string that was dialled.

Use Pulse Dialling. Placed at the end of the command string and

before the dial string. Causes the modem to pulse dial the numbers.

Use DTMF Dialling. Placed at the end of the command string and

before the dial string. Causes the modem to use DTMF tones to dial.

Reverse Mode. Allows the modem to call an originate-only modem by

forcing the call into answer mode. Must be entered as the last

character of the command string (just before the [ENTER]).

Wait for calling card bong. If bong is not detected within the time

specified by S7 (default = 30 seconds), the modem disconnects and

returns an error message.

Hookswitch flash. Causes the modem to go on-hook for 700

milliseconds and then off-hook.

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Section Four

Causes the modem to listen for 5 seconds of silence. If a 5 second

silence has not been detected within the period specified in S7

(default = 30 seconds), the modem disconnects and returns the NO

ANSWER result code. If it detects a busy signal, it returns a BUSY

result code. If the 5 seconds of silence is detected, then the modem

continues dialling the dial string.

Wait For Dial Tone Before Dialling. Causes the modem to wait for a

dial tone up to the period of time specified in register S7 (default = 30

seconds) before dialling the numbers that follow. If the modem

detects a dial tone before the given time delay, it continues to dial.

Otherwise, it goes on-hook.

Pause During Dial. Inserted between digits in a dial string. Causes

the modem to pause for the value given by register S8 (default = 2

seconds), before dialling the next digit. This delay can be used in

place of the "Wait For Dial Tone Before Dialling", but is not as

sophisticated.

;

Return To Command Mode After Dialling. Added to the end of a dial

string. Causes the modem to remain in the command mode after it

dials the digits proceeding the command. This allows the user to

issue additional dial commands or dial strings without overflowing

the command buffer. The modem looks for the carrier after the final

dial command is issued. The Command ATHn aborts this command.

Turn On Calling Tone. Turns on the periodic 1300 Hz calling tone if

originating the call. Calling tone is enabled only on a call-by-call

basis.

S=n Dial Stored Number. Follows the dial command string. Causes the

modem to dial a telephone number previously stored in directory

location n using &Zn command.

If ATD is entered without parameters, the modem goes off-hook and

waits for a carrier; if the handshake is not completed within the specified

time by register S7 (default = 30 seconds), the modem goes on-hook.

The Dial command will be aborted in progress upon receipt of any

character before completion of the handshake.

Examples

ATDT1-800-555-1212

Dial long distance number

Inserted pause

ATDT9,555-4444

ATDS=2

Dial stored number

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Modem Command Reference

Result Codes

NO DIAL TONE

If X2 or X4 is selected and 1 second of dial tone is

not detected within 5 seconds; or if W dial modifier

is used and 3 seconds of dial tone is not detected

within the time specified by S7

BUSY

If busy is detected, and X3 or X4 is selected or if dial

modifier is used

NO ANSWER

If “@” dial modifier is used and 5 seconds of

silence is not detected within the time specified by

CONNECTXXXX

NO CARRIER

If a connection is established

If a connection cannot be established, the abort

timer (register S7) expires; or a character is entered

during the handshake process

En — Command Echo

Parameters

Default

0 or 1

Controls the echo of characters received by the modem while the modem

is in the command mode. If both the modem and the software have echo

on, double characters will appear. If no characters appear, then both

character echoes are off.

Examples

ATE0

ATE1

Inhibits the echoing of commands

Enables the echoing of commands

Fn - Select Line Modulation (14400 only)

Parameters

Default

0 through 10, 13 through 19

This command can be used to assure that a connection is made only at

the specified speed.

Examples

ATF0

Selects auto-detect mode (equivalent to N1

command)

ATF1

ATF2

Permit V.21 or Bell 103 connections only based on

ATBn setting.

Reserved

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Section Four

ATF3

Permit V.23 1200/75 bps connections only

Permit V.22 1200 bps connections only

ATF4

ATF5

Permit V.22bis 2400 bps connections only

Permit V.22bis or V.32 4800 bps connections only

Permit V.32bis or V.32 7200 bps connection only

Permit V.32bis or V.32 9600 bps connections only

Permit V.32bis 12000 connections only

ATF6

ATF7

ATF8

ATF9

ATF10

ATF13

ATF14

ATF15

ATF16

ATF17

ATF18

Permit V.32bis 14400 bps connections only

Permit V.FC 14400 bps connection only

Permit 16800 bps connections only

Permit 19200 bps connections only

Permit 21600 bps connections only

Permit 24000 bps connections only

Permit 26400 bps connections only

ATF19

Permit 28800 bps connections only

* Only applicable to Trumpcard 28800 version

+Ms Select Line Modulation (28800 only)

Parameters

0 through 3, 9 through 11, 64, 69, 74

Default

This extended-format command selects the modulation, optionally

enables or disables automode, and optionally specifies the lowest and

highest connection rates using one to four sub-parameters. The

command format is:

+MS=<mod>[,[<automode>][,[<min.rate>][,[<max_rate>]]]]<CR>

Sub-parameter Definitions

1. <mod> = A decimal number which specifies the preferred modulation

(automode enabled or the modulation (audomode disabled) to use in

originating or answering a connection. the options are:

w<mod> Modulation Possible Rates

V21

300

V22

1200

V.22bis

V.23

2400 or 1200

1200

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Modem Command Reference

V.32

9600 or 4800

V.32bis

V.34

14400, 12000, 9600, 7200, or 4800

28800, 26400, 24000, 21600, 19200, 16800,

14400, 12000, 9600, 7200, 4800, or 2400

Bell 103

Bell 212

VFC

300

1200

28800, 26400, 24000, 21600, 16800, or 14400

2. <automode> is an optional numeric value which enables or disables

automatic modulation negotiation using V.8 or V.32bis annex a. The

options are:

OptionSelected

Notes

Automode disabled

Automode enabled using V.8 or V32bis annex ADefault

3. <min_rate> is an optional number which specifies the lowest rate at

which the modem may establish a connection. The value is decimal

coded, in units of bps, e.g., 2400 specifies the lowest rate to be 2400 bps.

the default is 300 for 300 bps

4. <max_rate> is an optional number which specifies the highest rate at

which the modem may establish a connection the value is decimal

coded, in units of bps, eg., 14400 specifies the highest rate to be 14400

bps. the default is 28800 for 28800 bps

Hn — Switch-Hook Control

Parameters

Default

0 or 1

If the user enters the command mode from the data mode issuing the

escape sequence(+++), or as a result of an ON-to-OFF transition of DTR

with the &D1 option in effect, the user may cause the modem to go on-

hook (disconnect) by issuing the H0 command.

Examples

ATH0

Causes the modem to go on-hook (hang-up)

ATH1

If the modem is on-hook, modem goes off hook,

returns an OK response, and awaits further

commands

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Section Four

In — Identification

Parameters

Default

0 - 6

Returns the product code, returns the checksum of the firmware ROM, or

computes the checksum of the firmware ROM and reports its error status.

The product code contains 3 digits. The checksum result consists of

three ASCII numeric characters followed by a carriage return and a line

feed. The error status line is either OK or ERROR.

Examples

ATI0

Reports the product code

ATI1

Reports the checksum computed on the firmware

ROM

ATI2

Performs a checksum on the firmware ROM and

indicates OK or ERROR

ATI3

ATI4

ATI5

ATI6

Reports firmware manufacturer identification

Reports product identification

Reports country code

Reports hardware configuration

Ln — Speaker Volume

Parameters

Default

0, 1, 2, or 3

Controls the internal speaker volume.

Examples

ATL0

ATL1

ATL2

ATL3

Selects low speaker volume

Selects medium speaker volume

Selects high speaker volume

Mn — Speaker Control

Parameters

Default

0, 1, 2, or 3

Selects when the speaker will be on or off.

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Modem Command Reference

Examples

ATM0

ATM1

Speaker is always off

Speaker is on during call establishment, but off

when connected to a remote modem

ATM2

ATM3

Speaker is always on

Speaker is off when dialling or connected to a

remote modem, but on during call answering

Nn — Automode Detection

Parameters

Default

0 or 1

This command enables or disables automode detection

Examples

ATN0

Automode detection is disabled. Subsequent

connections will be based on the setting in Register

S37, if S37=0 the speed of the connection must

match that at which the last AT command was

issued.

ATN1

Automode detection is enabled. Connections will be

based on an automode algorithm. This command is

equivalent to F0 command.

On — Return To The On-Line State

Parameters

Default

0 or 1

none

If the user enters the command mode from the data mode by issuing the

escape sequence, or as a result of an ON-to-OFF transition of DTR with

the &D1 option in effect, the user may return to the data mode without

terminating a call by issuing the O0 command. This command may also

be used to force a retrain. If the modem is on-hook, then the modem

behaves as if it went off-hook to originate without actually taking the relay

off-hook.

Examples

ATO0

Causes the modem to return to the data mode

ATO1

Causes the modem to return to the data mode and

to initiate a retrain when operating at 2400 bps.

Also, adjusts the transmit level at 2400 bps to the

Un setting.

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Section Four

Result Codes

CONNECT XXXX

NO CARRIER

If a connection is established

If retrain is not successful in the time specified by S7

P — Set Pulse Dial as Default

Parameters

Default

none

Causes the modem to assume that all subsequent dial commands are

pulse dialled. The user may omit the "P" from the dial strings.

Qn — Result Code Display

Parameter

Default

0 or 1

Determines whether or not the modem returns the result codes (see Xn

command).

Examples

ATQ0

ATQ1

Allows the modem to return result codes

Prohibits the modem from returning result codes

Sn — Read/Write S Registers

Parameters

Default

n = 0-95 x = 0-255

none

Selects a S register, reads or writes the contents of a S register, or reports

the value of a S register. All the S registers may be read. If no parameter is

entered, S0 is assumed. The “S” can be omitted to assume the last S-

All the registers will return the OK response if x is a legal value; however,

some registers will not actually write the value anywhere.

If the parameter number is beyond the range of the S-registers available,

the modem will return the ERROR message. The value x is “MOD”ed with

256, and if the result is outside the range permitted for a given S-register,

the values will still be stored, but functionally, the lower and higher limits

will be observed. Input and output is always in decimal format. Note that

some S-registers are read-only.

In some cases, writing to the S-register will appear to be accepted but the

value will not actually be written.

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Modem Command Reference

Examples

ATSn

Establishes S-register n as the default register

Set S-register n to the value x

ATSn=x

ATSn?

Reports the value of S-register n

T — Set Tone Dial as Default

Parameters:

Default:

none

Causes the modem to assume that all subsequent dial commands are

tone dialled. The user may omit the “T” from the dial string.

Vn — Result Code Form

Parameters

Default

0 or 1

Selects whether the modem returns long form or short form result codes.

All responses are ASCII values. Long-form (verbose) responses are

preceded and terminated with both carriage return and line feed control

characters. Short-form (numeric) responses are only terminated with a

carriage return control character (see Xn command).

Examples

ATV0

ATV1

Allows short-form (numeric) result codes to be sent.

Allows long-form (verbose) result codes to be sent.

Wn — Connect Message Control

Parameters

Default

0, 1, or 2

This command controls which message(s) are reported upon connection.

These messages can also be reported in either numeric or verbose form.

For example, both 77 and PROTOCOL:LAP-M indicates that the error-

correction protocol is LAP-M. (See Xn command.)

Examples

ATW0

Upon connection report CONNECT XXXX only

ATW1

Upon connection report CARRIER XXXX,

PROTOCOL XXXX and CONNECT XXXX

ATW2

Upon connection report CONNECT XXXX only

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Section Four

Xn — Extended Result Codes

Parameters

Default

0, 1, 2, 3, or 4

Determines whether the modem responds to dial tone and busy signals,

and how it displays result codes for CONNECT messages. When the

modem ignores dial tone, it waits for a time delay given by register S6

(default = 2 seconds) and then dials regardless of presence or absence of

dial tone; this is called blind dialling.

Examples

ATX0

Modem ignores dial tone and busy signal. Sends

only OK, CONNECT, RING, NO CARRIER, ERROR

and NO ANSWER result codes. Connection is

established by blind dialling.

ATX1

ATX2

Same as X0 with the addition of sending CONNECT

XXXX (XXXX = rate) result codes.

Modem ignores busy signal but waits for dial tone.

Sends only OK, CONNECT, RING, NO CARRIER,

ERROR, NO ANSWER, NO DIALTONE and

CONNECT XXXX (XXXX = rate) result codes.

Dialtone must be detected within 5 seconds.

ATX3

ATX4

Modem ignores dial tone but monitors for busy

signals. Sends only OK, CONNECT, RING NO

CARRIER, ERROR NO ANSWER, BUSY, and

CONNECT XXXX (XXXX= rate) result codes.

Connection is established by blind dialling.

Modem monitors dialtone and busy signals. All

result codes are enabled.

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Modem Command Reference

n Value in ATXn Command

Result Codes — Q0, V1, Wn, S95

Short Form LongForm

CONNECT

RING

NO CARRIER

ERROR

CONNECT 1200

NO DIAL TONE

BUSY

NO ANSWER

CONNECT 0600

CONNECT 2400

CONNECT 4800

CONNECT 9600

CONNECT 7200

CONNECT 12000

CONNECT 14400

CONNECT 19200

CONNNECT 38400

CONNECT 57600

CONNECT 115200

CONNECT 75TX/1200R

CONNECT 1200TX/75RX

CARRIER 300

CARRIER 1200/75

CARRIER 75/1200

CARRIER 1200

CARRIER 2400

CARRIER 4800

CARRIER 7200

CARRIER 9600

Note: Carrier, Compression, and Protocol messages

controlled by W command and S95.

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Section Four

Short Form

Long Form

n Value in ATXn Command

CARRIER 12000

CARRIER 14400

CARRIER 16800 *

CARRIER 19200 *

CARRIER 21600 *

CARRIER 24000 *

CARRIER 26400 *

CARRIER 28800 *

CONNECT 16800 *

CONNECT 21600 *

CONNECT 24000 *

CONNECT 26400 *

CONNECT 28800 *

COMPRESSION: CLASS 5

COMPRESSION: V.42BIS

COMPRESSION: NONE

PROTOCOL: NONE

PROTOCOL: LAP-M

PROTOCOL: ALT

PROTOCOL: ALT - CELLULAR

Note: Carrier, Compression, and Protocol messages controlled by

W command and S95.

* Only applicable to Trumpcard 28800 version

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Modem Command Reference

Yn — Control Long Space Disconnect

Parameters

Default

0 or 1

Enable/disable the generation and response to long space disconnect.

Examples

ATY0

Disable long space disconnect

ATY1

Enable long space disconnect. In non-error

correction mode, a four second space will be sent

prior to going on-hook. In error correction mode, the

modem will be on-hook when it receives a

continuous break greater than 1.6 seconds.

Zn — Reset

Parameters

Default

0 or 1

Causes the modem to disconnect and performs a warm start. This

command must be the last command on the command line. The reset

actions are 1) Clear serial port buffers, 2) Set the baud rate and parity to

match when any AT command is issued, 3) Restore the active

configuration with the user profile denoted by the parameter, and 4) clear

event based command buffers. The parameter n indicates which factory

default values are to be loaded. Currently, the factory defaults for 0 and 1

are the same.

&Cn — DCD Option

Parameters

Default

0 or 1

Controls the Received Line Signal Detected (/RLSD) [Carrier Detect

(DCD)] signal of the serial port.

Examples

AT&C0

RLSD is ON regardless of the state of the data

carrier from the remote modem

AT&C1

RLSD follows the state of the data carrier from the

remote modem

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Section Four

&Dn — DTR Option

Parameters

Default

0, 1, 2, or 3

Determines actions taken by the modem in relation to the Data Terminal

Ready (/DTR) signal of the serial port. The effect of /DTR loss depends

upon the &D and &Q (&M) commands.

The action for the event that follows /DTR loss is indicated in the following

table:

&D0

&D1

&D2

&D3

&Q0

&Q1

&Q2

&Q3

&Q4

&Q5

&Q6

NONE

The DTR-going-off events corresponding to the action numbers in the

above table are:

1. Modem disconnects and sends OK result code.

2. Modem goes into command mode if in data mode and sends the OK

result code.

3. Modem disconnects, sends the OK result code, and disables auto

answer while /DTR is OFF.

4. Modem performs a warm start (i.e., same as Z command).

&F — Restore Factory Configuration

Parameters

Default

none

Loads the modem active configuration area with the factory default values.

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Modem Command Reference

&Gn — Set Guard Tone

Parameters

Default

0, 1, or 2

Normally, controls the generation of guard tone. This command is not

implemented; however, the command structure is provided for application

compatibility.

&Jn — Telephone Jack Selection

Parameters

Default

0 or 1

The command structure is provided for application compatibility only and

performs no function.

&Kn — DTE/Modem Flow Control

Parameters

Default

0, 3, 4, 5 or 6

Determines how the modem controls the flow of data between the

communications software and the modem. When the modem terminal

buffer is nearly full, the modem will either send an XOFF command, or

drop CTS to stop the data flow. When the buffer is nearly empty, the

modem will either send an XON command, or raise CTS to start the data

flow.

The modem also responds to XON/XOFF characters, or RTS stimulus from

the communications software by suspending or resuming transmission

accordingly. The modem responds to XON/XOFF characters and also

passes the XON/XOFF characters to the remote modem as data if

transparent flow control is selected. When in Direct mode (&Q0), flow is

not used and the modem ignores the setting of this command.

Examples

AT&K0

Disables flow control

AT&K3

AT&K4

AT&K5

AT&K6

Enables RTS/CTS flow control

Enables XON/XOFF flow control

Enables transparent XON/XOFF flow control

Enables RTS/CTS and XON/XOFF flow control

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Section Four

&Ln — Line Type

Parameters

Default

0 or 1

Controls selection of leased line or dial-up line. Although the modem has

only a single line connection, the power level is changed when setting

leased line operation.

Examples

AT&L0

AT&L1

Dial-up line

Leased line

&Mn — Communication Mode

Parameters

Default

None

Same as &Q0.

&Pn — Dial Pulse Ratio (disabled for the U.S.)

Parameters

Default

0,1, 2 or 3

Selects the ratio of the off hook (make) to an on-hook (break) interval used

when pulse dialling.

Examples

AT&P0

39%/61% make/break ratio @ 10 pps

33%/67% make/break ratio @ 10 pps

33%/67% make/break ratio @ 20 pps

AT&P1

AT&P2

AT&P3

&Qn — Communication Mode

Parameters

Default

0, 4 through 6

The modem supports three basic communication modes: asynchronous,

autosync, and error correction.

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Modem Command Reference

Examples

AT&Q0

Selects asynchronous operation in the Direct mode.

In this mode, the communications software speed

must match the telco line speed.

AT&Q4

AT&Q5

Selects AutoSync operation. Is used in conjunction

with communications software that is compatible

with the Hayes Synchronous Interface (HSI).

Selects error correction mode. Modem negotiates

an error-correction link. The modem can be

configured to either disconnect or fallback to a

normal asynchronous connection if the link cannot

be negotiated (refer to register S36).

&Q5 and S36=0 Same as \N2 command (no

fallback)

&Q5 and S36=1 Same as \N3 command (fallback)

AT&Q6

Selects asynchronous operation in Normal mode

(Speed Buffering). In this mode, the communications

software speed can differ from the telco line speed.

&Rn — RTS/CTS Option

Parameters

Default

0 or 1

Controls the state of the Clear To Send (/CTS) signal operation, this can

be altered if hardware flow control is enabled. (see &K command).

Examples

AT&R0

CTS acts according to V.25bis handshake (i.e. /CTS

tracks /RTS [Request To Send])

AT&R1

The modem ignores /RTS;/CTS is always ON

&Sn — DSR Option

Parameters

Default

0 or 1

Determines whether Data Set Ready (/DSR) operates in accordance with

EIA-232-D specification or remains ON.

Examples

AT&S0

DSR is always ON

AT&S1

DSR is turned ON at start of handshaking and OFF

when carrier is lost

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Section Four

&Tn — Test and Diagnostic

Parameters

Default

0, 1, or 3 through 8

Selects the test command. Test commands must be initiated in the

command mode with asynchronous operation in the Direct mode selected

(&Q0) at a speed of less than 14400 or 28800 (28800 version only).

A telco line connection must be established prior to initiating digital

loopback tests. If these conditions are not met, the modem issues the

ERROR result code. If local analog loopback is initiated while the modem

is connected, the modem disconnects before performing the test.

An initiated test is active for a period of time specified by register S18 (test

timer) before returning to the command mode. If S18 is zero, the test

aborts when the user issues the &T0 command.

Examples

AT&T0

End test in progress. The escape sequence (+++)

must be issued to return the modem to the

command mode prior to sending this command.

Subsequent issuing of the O command while in the

command mode will cause the local and remote

modems to return to normal data mode operation if

the interrupted test was digital loopback.

AT&T1

AT&T3

Initiates local analog loopback. This test verifies the

working condition of the path between the local

communications software and the local modem. The

characters received from the communications

software are looped back by the modem.

Initiates remote digital loopback locally. The

characters received from the remote modem are

looped back to the remote modem by the local

modem. This test verifies the working condition of

the path from a remote modem, through a local

modem, and back to the remote modem.

AT&T4

AT&T5

Allows the modem to respond to a request from a

remote modem for a remote digital loopback test.

Prohibits the modem from granting a request from a

remote modem for a digital loopback test.

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Modem Command Reference

AT&T6

AT&T7

Initiates remote digital loopback. The characters

received from the local communications software

are transmitted to the remote modem and looped

back from the remote modem to the local modem.

This test verifies the working condition of the path

between the local communications software and the

remote modem.

Initiates remote digital loopback with self test. This

works similarly to &T6 except that the modem sends

an alternating zeros and ones (0101) test pattern to

the remote modem and continuously examines the

validity of the returned data. The modem increments

an internal error counter each time an error is

detected. At the end of the test, the modem returns a

3-digit error count.

AT&T8

Initiates local analog loopback with self test. This

test works similarly to &T7 except that the test

pattern is checked in the local analog loopback

mode (as in &T1). This allows a thorough testing of

the local modem transmit and receive functions

without an actual telco line connection.

&V — View Configuration and User Profiles

Parameters

Default

none

Displays the active configuration and user profiles.

Example

AT&V

ACTIVEPROFILE:

B1 E1 L2 M1 N1 Q0 T V1 W0 X4 Y0 &C0 &D0 &G0 &J0 &K3 &Q5

&R0 &S0 &T4 &X0 &Y0

S00:000 S01:000 S02:043 S03:013 S04:010 S05:008 S06:002

S07:030 S08:002 S09:006 S10:014 S11:095 S12:050 S18:000

S25:005 S26:001 S36:007 S37:000 S38:020 S44:020 S46:138

S48:007 S49:008 S95:000

STORED PROFILE 0:

B1 E1 L2 M1 N1 V1 W0 X4 Y0 &C0 &D0 &G0 &J0 &K3 &Q5 &R0

&S0 &T4 &X0

S00:000 S02:043 S06:002 S07:030 S08:002 S09:006 S10:014

S11:095 S12:050 S18:000 S36:005 S37:000 S40:105 S41:135

S46:138S95:000

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Section Four

STORED PROFILE 1:

B1 E1 L2 M1 N1 V1 W0 X4 Y0 &C0 &D0 &G0 &JO &K3 &Q5 &R0

&S0 &T4 &X0

S00:000 S02:043 S06:002 S07:030 S08:002 S09:006 S10:014

S11:095 S12:050 S18:000 S36:005 S37:000 S40:105 S41:135

S46:138S95:000

TELEPHONENUMBERS:

0= 1=

2= 3=

&Wn — Store User Profile

Parameters

Default

0 or 1

none

Saves the current configuration into non-volatile memory as one of two

user profiles. These settings are restored to the active configuration upon

receiving an Zn command or at power up (see &Y command). The user

profile saved is denoted by the parameter value. This command will yield

an ERROR message if unable to store the current configuration in non-

volatile memory.

Examples

AT&W0

AT&W1

Save as user profile 0

Save as user profile 1

&Yn — Designate Default User Profile

Parameters

Default

0 or 1

Designates which of two user profiles will be loaded into the active

configuration at power up. The user profile is denoted by the parameter

value.

Examples

AT&Y0

AT&Y1

Selects user profile 0

Selects user profile 1

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Modem Command Reference

&Zn=x — Store Phone Number

Parameters

Default

n = 0, 1, 2, or 3, x = dial string

none

Stores a 36-digit dial string (x) in the specified entry (n) for later dialling.

(See DSn command.)

\Bn — Transmit Break

Parameters

1 through 9 (If n = 0, the default value is used; if n is

greater than 9, 9 is used.)

Default

When this command is entered during a non-error correction connection,

the modem sends a break signal to the remote modem. The length of the

break is 100 times the n parameter value in milliseconds. If this command

is entered during an error-correcting connection, the break will be sent via

the error-correcting protocol giving no indication of length.

Result Codes

NO CARRIER

If not connected

\Gn — Modem-to-Modem Flow Control

Parameters

Default

0 or 1

The command applies in non-error correction mode; the modem enables

or disables the generation or recognition of modem-to-modem XON/XOFF

flow control.

Examples

AT\G0

AT\G1

Disables modem-to-modem flow control

Enables modem-to-modem flow control

\Kn — Break Control

Parameters

Default

0 through 5 (If n is greater than 5, 5 is used.)

Determines what the modem will do when a BREAK is received from the

communications software or the remote modem. During error correction

mode, the remote modem's BREAK control setting determines how the

local modem will handle the BREAK.

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Section Four

Examples

When a BREAK is received from the communications software when

connected to a remote modem, the modem takes the following action:

AT\K0,2,4

AT\K1

Modem enters the command mode (waiting for AT)

without sending a BREAK to the remote modem

Modem clears the terminal and modem buffers and

sends a BREAK to the remote modem

AT\K3

Modem does not clear the buffers but sends a

BREAK to the remote modem

AT\K5

Modem sends a BREAK to the remote modem in

sequence with any transmitted data.

When a BREAK is received from the remote modem during a non-error

correction connection, the modem takes the following action

AT\K0,1

AT\K2,3

AT\K4,5

Modem clears the terminal and modem buffers and

sends a BREAK to local communications software

Modem does not clear buffers but sends a BREAK

to the local communications software

Modem sends a BREAK in sequence with any data

being buffered, to the local communications

software

When a \B command is received from the communications software during

a connection and in the Command mode, the modem takes the following

action:

AT\K0,1

AT\K2,3

AT\K4,5

Modem clears the terminal and modem buffers and

sends a BREAK to the remote modem.

Modem does not clear buffers but sends a BREAK

to the remote modem.

Modem sends a BREAK in sequence with any data

being buffered, to the remote modem.

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Modem Command Reference

\Nn — Operation Mode Control

Parameters

Default

0, 1, 2, 3, 4, or 5

Selects the operating mode the modem uses while connected (see &Qn

command).

Examples

AT\N0

Selects Normal (speed buffering) mode. This option

takes effect at physical connection time.

AT\N1

AT\N2

Same as AT\N0.

Selects reliable link mode. This defines the modem-

to-modem connection to require error correction

connection. If an attempt to establish the reliable

link fails, the modem disconnects.

AT\N3

Selects auto-reliable link mode. The modem will

attempt an error-correction connection but will

fallback to Normal mode if unable to establish an

error correcting connection. This command takes

effect at physical connection time only.

AT\N4

AT\N5

Selects LAPM error-correction mode. The modem

will attempt a LAPM error-correction connection. If

the attempt fails, the modem disconnects.

Selects MNP error-correction mode. The modem will

attempt a MNP error-correction connection. If the

attempt fails, the modem disconnects.

%Cn — Compression Control

Parameters:

Default

0, 1, 2, or 3

Enables or disables data compression negotiation. The modem can only

perform data compression on an error-correcting link.

Examples

AT%C0

Disables data compression

AT%C1

AT%C2

AT%C3

Enables MNP 5 data compression

Enables V.42bis data compression

Enables both MNP 5 and V.42bis data compression

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Section Four

%En — Enable/Disable Line Quality Monitor

Parameters

Default

0-3

Controls whether or not the modem will automatically monitor the line

quality and request a retrain, or fall back when line quality is insufficient,

or fall forward if line quality is sufficient.

Examples

AT%E0

Disable line quality monitor

AT%E1

AT%E2

Enable line quality monitor and auto-retrain

Enable line quality monitor and fall back / fall

forward

AT%E3

Enable line quality monitor and auto-retrain, but

hang-up immediately when EQM reaches hang-up

threshold

%L — Report Received Signal Level

Parameters

Default

none

Returns a value identifying the received signal level. The possible values

are:

009 = Received level of -9 dBm

010 = Received level of -10 dBm

011 = Received level of -11 dBm

043 = Received level of -43 dBm

If the received level is greater than -9 dBm, 009 will be reported. If the

received level is less than -43 dBm, 043 will be reported.

%Q — Report Line Signal Quality

Parameters

Default

none

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Modem Command Reference

Returns the high-order byte of the calculated Eye Quality Monitor (EQM)

value. The value for a normal connection ranges from about 0 to 2 and

approaches 8 for a progressively poorer connection.

-Kn — MNP Extended Services

Parameters

Default

0, 1 or 2

Enables the modem to investigate the capabilities of the modem's MNP10

capacity, and determine whether a V.42 LAPM connection will be

converted to an MNP connection. When -K1 is set on both modems, a

LAPM connection will be converted to an MNP10 connection.

Examples

AT-K0

Disable V.42 LAPM to MNP 10 conversion

Enable V.42 LAPM to MNP 10 conversion

AT-K1

AT-K2

Enable V.42 LAPM to MNP 10 conversion; inhibit

MNP extended services initiation during V.42 LAPM

detection phase

*Hn — Link Negotiation Speed

Parameters

Default

0, 1 or 2

Sets the connection speed for link negotiation before upshift occurs

between modems. When poor telephone lines are anticipated, the *H1

command should be used to set the connection speed to 1200 bps to

facilitate link negotiation. If this command is set to a 1 and the modem

connects in LAPM, the connection speed will be fixed at 1200 bps.

Examples

AT*H0

Link negotiation occurs at the preferred line speed

Link negotiation occurs at 1200 bps

AT*H1

AT*H2

Link negotiation occurs at 4800 bps

)Mn — Transmit Level Adjustment for Cellular

Connection

Parameters

Default

0 or 1

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Section Four

Enables adjustment of the transmit levels based on attenuation and

possibly, signal-to-noise ratio of the line to minimize the "clipping". The

transmit levels are adjusted only when retrain and speed shift are

performed.

Examples

AT)M0

No transmit level adjustment, fixed at -10 dBm

[adjust power level if remote is set to )M1]

AT)M1

Adjust transmit level during retrain speed shift

:En — Compromise Equalizer

Parameters

Default

0 or 1

Enables or disables the V.32 compromise equalizer.

Examples

AT:E0

AT:E1

Disable the equalizer

Enable the equalizer

@Mn — Initial Cellular Power Level

Parameters

Default

0 - 31

0 (-26dBm)

Sets the initial power level for upshift at connect until line conditions can

be determined.

Examples

AT@M0

-26dBm

-30dBm

-10dBm

-11dBm

-12dBm

AT@M1

AT@M2-@M10

AT@M11

AT@M12

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Modem Command Reference

AT@M30

AT@M31

-30dBm

-31dBm

[n init string] — Event Based Command

Parameters

n = 0 or 1

init string = any valid AT command(s) except

Z (reset)

n = 0

Defaults

init string = NULL

The event based command is unique in that it allows single or multiple AT

commands to be associated with an event identified by an event identifier

“n”. Currently only two events are identified; event 0 indicates that the

modem is currently operating using a land line based communication line;

event 1 indicates that the modem is currently operating using a cellular

based communications line. These events can change dynamically, and

thus whenever a change is detected the modem will execute the AT

commands associated with the event automatically.

Multiple event based commands can be on the same command line or

can be entered on separate command lines. The AT command(s)

associated with an event are stored in volatile memory, powering off the

modem or executing the ATZ command will clear the command(s). A

NULL init string will also serve as a way of clearing command(s)

associated with an event.

All commands between the [n and then next], or [n, or the end of the

command line will be associated with the event n. All commands will be

verified and commands that require interaction or return information

should not be used since these will be executed based on changing

events.

Examples

AT[0&F&C1&D2&S1W1S95=18]

The above command stores the &F&C1&D2&S1W1S95=18

commands for event 0 (land based connection) and will be

automatically executed when a change of event from cellular

back to land based is detected.

AT&F&C1&D2&S1[0S95=18][1S95=44)M1*H2:E0]

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Section Four

The above command processes the &F&C1&D2&S1 once when

the command line is first entered, the S95=18 whenever

operating as a land based connection and S95=44)M1*H2:E0

whenever operating as a cellular based connection.

AT[] or AT[0]

The above command clears any command(s) associated with

event 0 (land based connection).

Modem S Registers

The S registers are summarized below along with their default values.

Registers denoted with an * may be stored in one of the two user profiles

by entering the &Wn command. One of these profiles may be loaded at

any time by using the Zn command.

Default Register Settings

The factory default values are stored in ROM and are loaded into the

active configuration at power up or by the Zn command. In addition, the

designated default profile is subsequently loaded, and may change some

of the factory default values. The designated default profile can be

changed by entering the &Yn command where n is one of the two

possible user profiles. All of the factory default values may be loaded at

any time by entering the &F command.

Modem Register Summary

S0 *

Title

Default

Number of Rings Till Auto-Answer

Ring Counter

S2 *

Escape Character

Carriage Return Character

Line Feed Character

Back Space Character

Wait For Blind Dialling *

Wait For Carrier After Dial

Pause Time For Dial Delay

S7 *

S8 *

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Modem Command Reference

S9 *

Carrier Detect Response Time

Lost Carrier To Hang Up Delay

DTMF Tone Duration

Escape Code Guard Time

Reserved

S10

S11 *

S12 *

S13

none

138

none

S14 *

S15

Bit Mapped Options **

Reserved

S16

Bit Mapped Test Options **

Reserved

S17

none

S18 *

S19

Test Timer

Reserved

S20

Reserved

none

S21 *

S22 *

S23 *

S24

Bit Mapped Options **

Sleep Inactivity Timer

Delay To DTR

117

S25 *

S27 *

S28

Bit Mapped Options **

Bit Mapper Options

Reserved

S29

none

S30 *

S31

Inactivity Timer

Bit Mapper Options **

XON Flow Control Character

Title

194

S32

S33

Default

XOFF Flow Control Character

Reserved

S34-S35

S36 *

S37 *

S38 *

S39 *

S40

none

LAPM Failure Control

Desired Telco Line Speed

Delay Before Forced Disconnect

Bit Mapped Options **

Bit Mapped Options (MNP) **

Unused

105

S41

S44

none

138

S46 *

S48 *

S86

Protocol Selection

V.42 Negotiated Action

Connection Failure Cause Code

User’s Guide and Reference

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Section Four

S95 *

Extended Result Codes

* Register value may be stored in one of two user profiles with the AT&Wn

command.

** Writing to bit mapped options registers, although possible, can result in

unreliable and

unpredictable operation.

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Modem Command Reference

RegisterDescriptions

S0 — Number of Rings Till Auto-Answer

Range

Default

0-255 rings

Establishes the number of rings required before the modem answers the

incoming calls. Setting this register to zero disables auto-answer mode.

S1 — Ring Counter

Range

Default

0-255 rings

Number of rings which the modem detects before it answers a call. If no

rings occur over an eight second interval, the register is cleared.

S2 — Escape Character

Range

Default

0-255, ASCII decimal

S2 holds the decimal value of the ASCII character used as the escape

character. The default value corresponds to an ASCII '+'. A value over 127

disables the escape process, i.e., no escape character will be recognized.

S3 — Carriage Return Character

Range

Default

0-127, ASCII decimal

13 (Carriage Return)

Sets the command line and result code terminator character. Pertains to

asynchronous operation only.

S4 — Line Feed Character

Range

Default

0-127, ASCII decimal

10 (Line Feed)

Sets the character recognized as a line feed. Pertains to asynchronous

operation only. The Line Feed control character is output after the

Carriage Return control character if verbose result codes are used.

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Section Four

S5 — Backspace Character

Range

Default

0-32, ASCII decimal

8 (Backspace)

Sets the character recognized as a backspace. Pertains to asynchronous

operation 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 communications software 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.

S6 — Wait Time for Blind Dialling

Range

Default

2-255 seconds

Sets the length of time to pause after the modem goes off-hook and before

the modem dials the first digit of the telephone number. The modem

always pauses a minimum of 2 seconds even if the S6 register is set to a

value less than 2 seconds. The "Wait for Dial Tone" call progress feature

(W in the dial string) will override the value in register S6. If option X2 or

X4 is in effect, this register is ignored.

S7 — Wait For Carrier After Dial

Range

Default

1-255 seconds

Defines two delay times:

1. During call establishment, this register establishes the time that the

local modem waits for carrier from the remote modem before hanging

up.

2. Sets the length of time that the modem waits when the "Wait For Dial

Tone" call progress feature (W in the dial string) is in effect.

S8 — Pause Time For Dial Delay

Range

0-255 seconds

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Modem Command Reference

Default

Sets the length of time to pause when the modem encounters the "Pause

During Dial" call progress feature, i.e., the comma (,).

S9 — Carrier Detect Response Time

Range

Default

1-255 tenths of second

6 (0.6 seconds)

Determines how long a carrier signal must be present before the modem

recognizes it as a carrier and turns on /RLSD. As this time is increased,

there is less chance to detect a false carrier due to noise from the telco

line.

S10 — Lost Carrier To Hang Up Delay

Range

Default

1-255 tenths of a second

14 (1.4 seconds)

Sets the length of time 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. When register S10 is set to 255, the modem

functions as if carrier is always present.

The actual interval the modem waits before disconnecting is the value in

be greater than the S9 value or else the modem disconnects before it

recognizes the carrier.

S11 — DTMF Tone Duration

Range

Default

50-255 milliseconds

95 milliseconds

Sets the duration of tones in Dual Tone Multifrequency (DTMF) dialling.

This value has no effect on pulse dialling.

S12 — Escape Code Guard Time

Range

Default

0-255 fiftieths of a second

50 (1 second)

Sets the time delay required immediately before and after entering the

escape code. The time interval between the sending of the first and

second, or the second and the third escape code characters must be less

than the value of the guard time.

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Section Four

S18 — Test Timer

Range

Default

0-255 seconds

Sets the length of time the modem conducts a test before returning to the

command mode. If this register is zero, the test will not automatically

terminate; the test must be terminated from the command mode by issuing

an &T0 or H command.

S24 — Sleep Inactivity Timer

Range

Default

0-255 seconds

10 seconds

Sets the length of time, in seconds, that the modem will wait before

entering power down sleep mode. The time is reset by any data activity or

telephone line activity. A value of zero will disable power down sleep

mode.

S25 — Delay to DTR

Range

Default

0-255 (hundredths of a second)

A change in /DTR (ON-to-OFF) that persists for a period shorter than the

value held in S25 is ignored by the modem while it is in data mode.

S30 — Inactivity Timer

Range

Default

0-255

0 (disabled)

Determines the length of time, in ten-second intervals, that the modem will

wait before disconnecting when no data is sent or received. In MNP or

V.42 mode, any data transmitted or received will reset the timer. In other

modes, any data transmitted will reset the timer. The inactivity timer is

inoperative in synchronous mode.

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Modem Command Reference

S32 — XON Character

Range

0-255

Default

Sets the value of the XON character.

S33 — XOFF Character

Range

0-255

Default

Sets the value of the XOFF character

S36 — LAPM Failure Control

Range

Default

0-7

This register is used when the S48 register contains the value 128 and an

attempted error correction link fails. These fallback options are initiated

immediately upon connection if S48 = 128.

If an invalid number is entered, the number is accepted into the register,

but S36 will act as if the default value is entered.

The S36 actions are:

S36 = 0

S36 = 1

Modem disconnects.

Modem stays on-line and a Direct mode connection

is established.

S36 = 2

S36 = 3

Reserved.

Modem stays on-line and a Normal mode

connection is established.

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Section Four

S36 = 4

An MNP connection is attempted, and if it fails, the

modem disconnects.

S36 = 5

An MNP connection is attempted, and if it fails, a

Direct mode connection is established.

S36 = 6

S36 = 7

Reserved.

An MNP connection is attempted, and if it fails, a

Normal mode connection is established.

S37 — Desired Telco Line Speed

Range

Default

0-12

This register determines the desired telco line speed if the N0 command is

in effect.

If an invalid number is entered, the number is accepted into the register,

but S37 will act as if the default value is entered.

S37 = 0

S37 = 1-3

S37 = 4

S37 = 5

S37 = 6

S37 = 7

S37= 8

Attempt automode connection.

Attempt to connect at 300 bps.

Reserved.

Attempt to connect at V.22 1200 bps.

Attempt to connect at V.22bis 2400 bps.

Attempt to connect in V.23 75/1200 mode.

Attempt to connect at V.32bis/V.32 4800 bps

Attempt to connect at V.32bis/V.32 9600 bps

Attempt to connect at V.32bis 12000 bps

Attempt to connect at V.32bis 14400 bps

Attempt to connect at V.32bis 7200 bps.

Attempt to connect at V.FC 14400 bps

S37=9

S37=10

S37=11

S37=12

S37=15

S37=16

S37=17

S37=18

S37=19

S37=20

S37=21

Attempt to connect at 16800 bps

Attempt to connect at 19200 bps

Attempt to connect at 1600 bps *

Attempt to connect at 24000 bps

Attempt to connect at 26400 bps

Attempt to connect at 28800 bps

* Only applicable to Trumpcard 28800 version

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Modem Command Reference

S38 — Delay Before Forced Disconnect

Range

Default

0-255 seconds

This register specifies the delay between the modem's receipt of the

Hangup (H) command to disconnect (or ON-to-OFF transition of /DTR if

the modem is programmed to follow the signal) and the disconnect

operation. For an error-correction connection, this register can be used to

ensure that data in the modem buffer is sent before the modem

disconnects. If S38 is set between 0 and 254, the modem will wait that

number of seconds for the remote modem to acknowledge all data in the

modem buffer before disconnecting. If time expires before all data is sent,

the NO CARRIER result code will be issued to indicate that data has been

lost. If all data is transmitted prior to timeout, the response to the H0

command will be OK. If S38 is set to 255, the modem data does not

timeout, and continues to attempt to deliver data in the buffer until the

connection is lost, or the data is delivered.

S46 — Protocol Selection

Range

136 or 138

Default

136

Controls selection of compression.

The following actions are executed for the given values:

S46 = 136

S46 = 138

Execute error correction protocol with no

compression.

Execute error correction protocol with compression.

In addition to V.42bis, the modem also implements

MNP4 data compression. V.42bis is used only with

LAPM, and MNP5 only with MNP4.

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Section Four

S48 — V.42 Negotiation Action

Range

Default

0,7, or 128

The V.42 negotiation process determines the capabilities of the remote

modem. However, when the capabilities of the remote modem are known

and negotiation is unnecessary, the process can be bypassed if desired.

If an invalid number is entered, it is accepted into the S register, but S48

will act as if 128 is entered.

S48 = 0

Disable negotiation; bypass the detection and

negotiation phases; and proceed with LAPM.

S48 = 7

Enable negotiation.

S48 = 128

Disable negotiation; bypass the detection and

negotiation phases; and proceed at once with the

fallback action specified in S36. Can be used to

force MNP.

S86 — Connection Failure Cause Code

Range

Default

0, 4, 5, 9, 12, 13, or 14

When the modem issues a NO CARRIER result code, a value is written to

this S register to help determine the reason for the failed connection. S86

records the first event that contributes to a NO CARRIER message.

The cause codes are:

S86 = 0

S86 = 4

S86 = 5

Normal disconnect, no error occurred

Loss of carrier

V.42 negotiation failed to detect an error-correction

modem at the other end

S86 = 9

The modems could not find a common protocol

Normal disconnect initiated by the remote modem

S86 = 12

S86 = 13

Remote modem does not respond after 10

re-transmissions of the same message

S86 = 14

Protocol violation

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Modem Command Reference

S95 — Extended Result Codes

The bits in this register can be set to override some of the Wn command

options. A bit set to a 1 in this register will enable the corresponding result

code regardless of the Wn setting.

Bit 0

Bit 1

CONNECT result code indicates DCE speed instead

of DTE speed

Append/ARQ to verbose CONNECT XXXX result

code if protocol is not NONE

Bit 2

Bit 3

Bit 4

Bit 5

Bit 6

Bit 7

Enable CARRIER XXXX result code

Enable PROTOCOL XXXX result code

Reserved

Enable COMPRESSION result code

Reserved

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Section Four

Facsimile Commands

Fax commands are listed here only for reference. Use of these commands

should be limited to fax application software.

If you have additional questions about the Trumpcard facsimile operation,

please contact Ositech (our address and telephone number are in the

front of this manual).

Class 1 Commands

Command

+FTS=n

+FRS=n

+FTM=n

+FRM=n

+FTH=n

+FRH=n

Description

Stop transmission and wait

Receive silence

Transmit data

Receive data

Transmit data with HDLC framing

Receive data with HDLC framing

Class 2 Commands

Action Commands

Command

Description

Originate a call

Answer a call

+FDT=

+FET=N

+FDR

+FK

Data transmission

Transmit page punctuation

Begin or continue phase C receive data

Session termination

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Modem Test Procedures

Section Five

Modem Test Procedures

This section of the manual describes the different tests that you can

perform when you are trying to find the source of a problem.

•

Local Modem Self-Test

Local Analog Loopback

Local Analog Loopback with Self-Generated Pattern

Remote Digital Loopback

Remote Digital Loopback with Self-Generated Pattern

Local Digital Loopback

Testing Modem Memory

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Section Five

Local Modem Self-Test

To run a local self-test:

1. Put the Modem into interactive or local mode. Refer to the

communications software manual for this information.

2. Enter AT [ENTER]. The Modem will respond with OK. If you cannot

see the letters you entered, the local Modem echo is OFF. To turn on

the local Modem echo, enter ATE1 [ENTER].

If double characters appear on the screen, both the Modem and

software are set to local echo ON. To set the Modem to local echo off,

enter ATE0 [ENTER].

If 0appears on your screen in place of OK, the numeric form result

codes have been enabled. To select textual result codes, enterATV1

[ENTER]. The Modem will respond with OK.

If the Modem does not respond:

•

Ensure that the communications software setup procedure

was run after the Modem was installed. Setup must be run

each time the Modem is installed.

Check that the COM port address of the serial port is identical

to the software COM port assignment.

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Modem Test Procedures

Local Analog Loopback

This test checks the path between the local Modem and the PC. The test

is only functional when the Modem is in direct mode (&Q0) and the COM

port baud rate is set to 14400 bps (Trumpcard 14400) / 28800 bps

(Trumpcard 28800) or less.

To start this test, the Modem must be in command mode.

To run this test:

1. Enter AT&T1 [ENTER]. Wait until the Modem returns a CONNECT

message.

2. Enter a test message. For example, “This message should be

echoed back.”

The message should immediately appear on the screen as you enter

it.

3. Enter +++(the escape sequence).

The Modem will respond with OK. The Modem is now in command

mode.

4. Enter AT&T0 [ENTER]to end the test.

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Section Five

Local Analog Loopback with Self-

Generated Pattern

This test verifies the integrity of the local Modem transmit and receive

circuits. The test is only functional when the Modem is in direct mode

(&Q0) and the COM port baud rate is set to 14400 bps (Trumpcard 14400)

/ 28800 bps (Trumpcard 28800) or less.

For this test, the Modem must be in command mode.

To start the test:

1. Enter AT&T8 [ENTER]and wait for a while. The Modem will not

respond visibly.

2. Enter AT&T0 [ENTER]to mark the end of the test. The Modem will

respond with a three-digit number indicating the test results.

During this test, a continuous data sequence is sent by the local Modem

transmitter and picked up by the local Modem receiver. The transmitted

and received data sequences are compared and the Modem then returns

a three-digit number indicating test results. If the result is 000, the local

Modem transmit and receive circuits have passed the test.

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Modem Test Procedures

Remote Digital Loopback

This test checks the local and remote modems and the telephone circuit.

The test is only functional when the Modem is set to direct mode (&Q0)

and the COM port baud rate is set to 14400 bps (Trumpcard 14400) /

28800 bps (Trumpcard 28800) or less.

A message is sent to the remote unit by the Modem. The remote unit

loops the test message back. The received message is then compared

with the previously transmitted message to verify the connection. If the

data patterns do not match, then there is a problem with either the local or

remote Modem or the telephone circuit. If this is the case, both local and

remote stations may initiate local analog loopback tests to further isolate

the source of the problem.

To perform this test:

1. Enter AT&F&Q0 [ENTER] to put the Modem in basic asynchronous

mode.

2. Establish a connection with a remote Modem and enter +++(the

escape sequence) to revert to command mode. The Modem will reply

with OK.

3. Enter AT&T6 [ENTER]to begin the test. The Modem will display a

CONNECTresponse if the loopback data link has been successfully

completed. It will display an ERRORresponse if the link has failed.

If successful, key in a test message. The message will be echoed on

the local screen.

4. Enter +++(the escape sequence). The Modem will respond with OK.

5. Enter AT&T0 [ENTER]to end the test. The Modem will respond with

OK.

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Section Five

Remote Digital Loopback with Self-

Generated Pattern

This procedure tests the remote Modem port, the telephone line, the local

serial and Modem ports. The test is only functional when the Modem is in

direct mode (&Q0) and the COM port baud rate is set to 14400 bps

(Trumpcard 14400) / 28800 bps (Trumpcard 28800) or less.

This test is similar to the Remote Digital Loopback test.

In this test, the local Modem sends the remote Modem a special test data

sequence and the remote Modem echoes the data back. The local

Modem examines the returned data and establishes an error count each

time a mismatch is detected.

To run this test:

1. Establish a connection with a remote Modem.

2. Enter AT&T4 [ENTER]to ensure that the remote operator has set the

Modem to accept a Remote Digital Loopback request.

3. Enter AT&T7 [ENTER]to initiate the remote digital loopback test. The

Modem will send a test pattern to the remote Modem.

4. Enter AT&T0 [ENTER]to end the test. The Modem will return a three-

digit number showing the test results. If the result is 000, the local and

remote modems, and the telephone line have passed the test.

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Modem Test Procedures

Local Digital Loopback

This test is used to verify the communications link and the remote

Modem, and is only functional when the Modem is in direct mode (&Q0)

and the COM port baud rate is set to 14400 bps (Trumpcard 14400) /

28800 bps (Trumpcard 28800) or less.

To run this test:

1. Establish a connection with a remote Modem.

2. Enter AT&T3 [ENTER]to put the Modem into the local digital

loopback mode.

3. Instruct the remote Modem operator to enter a message.

During this test the local Modem simply loops back any incoming

data to the remote Modem. If the information sent and received by the

remote Modem are identical, the test is successful.

4. Enter AT&T0 [ENTER]to end the test.

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Section Five

Testing Modem Memory

The I command can be used to obtain information on the modem’s

memory and perform a checksum test.

Product Information

This test displays the modem’s product information.

1. Enter ATI3 [ENTER]. The Modem will respond with a line identifying

the Modem and its capabilities. Use this information when calling

Ositech for technical support.

ROM Checksum Test

This test compares the ROM checksum result with a stored value.

1. Enter ATI2 [ENTER]to run this test. The Modem will respond with

the OK prompt if the totals match and an ERRORprompt if they differ.

If the ERRORprompt appears, call Ositech technical support.

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