AT T Cordless Headset TL 7600 User Manual

User’s manual  
TL7600  
DECT 6.0  
accessory cordless headset  
Parts checklist  
Check to make sure the headset package includes the following  
items. Save your sales receipt and original packaging in the  
event warranty service is necessary.  
User’s manual  
TL7600  
DECT 6.0  
accessory cordless headset  
User's manual  
Cordless headset  
Over the ear hook  
Headset charger  
Battery compartment cover  
Battery for headset  
Charger power adapter  
Behind the neck band  
Over the head band  
User’s manual  
TL7600  
DECT 6.0  
accessory cordless headset  
Table of contents  
Ending a call on  
Getting started  
the headset............................20  
Auto off....................................20  
Temporary ring tone  
silencing...................................21  
Intercom calls and  
Quick reference guide -  
headset............................................1  
Headset lights..........................1  
Headset alert tones..............3  
Quick reference guide -  
transfers...................................21  
Options while on calls..........22  
Volume control.....................22  
Call waiting............................22  
Switching a call between  
handset and headset.........23  
Multiple headset/  
headset charger..........................4  
Installation preparation...........5  
Charger installation...................6  
Battery installation....................7  
Battery charging.........................8  
Registering the headset..........9  
To register a headset to  
handset use............................24  
Mute...........................................24  
Replacing a headset..............25  
To deregister all  
the DECT headset base....10  
To register the headset  
to an AT&T DECT cordless  
telephone base....................11  
Headset attachments............12  
Over the ear hook..............12  
Over the head band...........15  
Behind the neck band......17  
headsets from your  
TL7610/TL7611/TL7612  
headset base.........................25  
To deregister all headsets  
from an AT&T cordless  
telephone base....................26  
Operation  
Headset operation..................19  
Making a call.........................19  
Answering a call on the  
headset.....................................20  
Appendix  
Troubleshooting.......................27  
Important safety  
information.................................35  
Especially about cordless  
headsets ..................................36  
Precautions for users  
of implanted cardiac  
pacemakers............................38  
Pacemaker patients...........38  
Maintenance...............................39  
FCC Part 68 and ACTA..........40  
FCC Part 15................................43  
Limited warranty......................45  
Technical specifications.......49  
DECT 6.0 digital  
technology..............................49  
Operating range...................49  
Extended range and  
clarity........................................49  
Index  
Index..............................................50  
5
Getting started  
Quick reference guide - headset  
ON/OFF  
Press to make, answer, or end a call.  
Headset lights  
ON/OFF light status  
On  
• Headset is charging in the headset charger.  
• Headset is trying to register to the headset base or  
telephone base.  
• Headset is searching for the headset base.  
Flash  
• Flashes slowly when incorrect battery is installed.  
• Flashes three times, followed by a pause. This cycle  
then repeats three more times and then shuts down to  
indicate the battery level is very low.  
• Flashes twice every five seconds to indicate the  
headset is not registered.  
• Flashes every 20 seconds to indicate the battery is low  
and needs to be charged in the headset charger.  
• Flashes every three seconds to indicate the headset  
is in use.  
• Flashes quickly when there is an incoming call.  
1
Getting started  
Quick reference guide - headset  
VOLUME /+ –  
Press the volume keys on the  
side of the headset to adjust the  
listening volume when on a call  
(page 22).  
MUTE/FLASH  
Press to mute the microphone  
during a call (page 24).  
Press and hold to receive call  
waiting during a call (page 22).  
EARPIECE  
Press to mute the ring tone in  
the earpiece when there is an  
incoming call (page 21).  
Battery compartment cover  
Remove to install or replace the  
battery (page 7).  
Microphone  
2
Getting started  
Quick reference guide - headset  
Headset alert tones  
Three quick beeps. • A VOLUME /+ – key is pressed when  
the volume is already at its highest or  
lowest setting.  
• The headset is not registered and the  
headset ON/OFF button is pressed.  
• The headset has gone out of range from  
the headset base during a call.  
One short beep  
• Low battery warning.  
every 20 seconds.  
One short beep  
• The call is muted.  
every 15 seconds.  
One long beep  
repeated.  
• Call waiting alert tone.  
One short beep.  
• The headset ON/OFF key is pressed to  
go on hook or off hook.  
3
Getting started  
Quick reference guide - headset charger  
Charging cradle  
Place the headset here for charging.  
Power cord groove  
Place the power cord here.  
Power jack  
Plug the small end  
of the charger power  
adapter here.  
4
Getting started  
Installation preparation  
You must install and  
charge the battery before  
using the headset.  
See pages 6-8  
for easy instructions.  
STOP!  
If you subscribe to high-speed Internet service (DSL - digital  
subscriber line) through your telephone lines, you must install  
a DSL filter between the telephone line cord and the telephone  
wall jack. The filter prevents noise and caller ID problems caused  
by DSL interference. Please contact your DSL service provider for  
more information about DSL filters.  
For customer service or product information, visit our website at  
www.telephones.att.com or call 1 (800) 222-3111.  
In Canada, dial 1 (866) 288-4268.  
Avoid placing the headset charger too close to:  
• Communication devices such as television sets, VCRs, or other  
cordless telephones.  
• Excessive heat sources.  
• Noise sources such as a window with traffic outside, motors,  
microwave ovens, refrigerators, or fluorescent lighting.  
• Excessive dust sources such as a workshop or garage.  
• Excessive moisture.  
• Extremely low temperature.  
• Mechanical vibration or shock such as on top of a washing  
machine or work bench.  
5
Getting started  
Charger installation  
1. Plug the small end of the  
charger power adapter into  
the power jack at the bottom  
of the headset charger. Place  
the power cord in the power  
cord slot.  
2. Plug the charger power  
adapter into a power  
outlet not controlled by a  
wall switch.  
IMPORTANT INFORMATION  
1. Use only the power adapter supplied with this product. To  
order a replacement power adapter, visit our website at  
www.telephones.att.com, or call 1 (800) 222-3111.  
In Canada, dial 1 (866) 288-4268.  
2. The power adapter is intended to be correctly oriented in a  
vertical or floor mount position. The prongs are not designed  
to hold the plug in place if it is plugged into a ceiling,  
under-the-table or cabinet outlet.  
6
Getting started  
Battery installation  
Install the battery as shown below. For optimal performance,  
charge the headset battery for at least six hours before use. When  
fully charged, the headset battery provides approximately 10 hours  
of talk time or 5 days of standby time. When the headset is not in  
use, recharge by returning it to the headset base.  
1
1. If the battery compartment cover  
is attached, press on both sides  
of the battery compartment cover  
and lift it up and off.  
2. Insert the battery into the battery  
compartment with the label THIS  
SIDE UP facing up.  
2
3
3. Push the battery plug into the  
connector inside the compartment  
according to the color-coded label  
and place the wires neatly inside  
the compartment.  
5
4. Insert the tab on the bottom of  
the battery compartment cover  
into the battery compartment.  
4
5. Press down gently on the battery  
compartment cover until it snaps  
into place.  
NOTE: Remove the ear hook from the headset (see page 14) before  
battery replacement.  
7
Getting started  
Battery charging  
After installing the battery, charge the headset by placing it on  
the headset charger as shown below. Before registration, the  
headset ON/OFF light flashes twice every five seconds whether  
the headset is charging or not. After registration, the headset  
ON/OFF light is on when the headset is charging.  
Push  
ON/OFF light  
Insert  
1. Insert the headset into  
the charging cradle.  
2. Push the headset downward  
until the ON/OFF light on the  
headset turns on.  
IMPORTANT INFORMATION  
Use only the supplied rechargeable battery or replacement battery  
(model BT191545). To obtain a replacement battery, visit our website at  
www.telephones.att.com or call 1 (800) 222-3111.  
In Canada, dial 1 (866) 288-4268.  
8
Getting started  
Registering the headset  
You must register your new TL7600 headset with one of the  
following models before use:  
• AT&T DECT cordless headset TL7610/TL7611/TL7612  
(see page 10).  
You can register a maximum of two headsets to each  
headset base.  
-OR-  
• A compatible AT&T DECT cordless telephone (see page 11).  
You can register a maximum of two headsets to each  
cordless telephone.  
The telephone base recognizes and counts a headset the same  
as a handset. Refer to your telephone user’s manual for the  
maximum number of handsets that you can register to the  
telephone base. If you have the maximum number of handsets  
registered, you need to follow the deregistration information in  
your telephone user’s manual.  
Visit www.telephones.att.com/headsets for a list of  
compatible telephones.  
The first headset provided with your TL7610/TL7611/TL7612 has  
a blue ON/OFF light. When you register a second headset, the  
ON/OFF light of that headset turns orange to help you identify  
the headsets.  
You can only register the headset to one product at a time, so  
the headset must not be already registered before registering to  
a headset base or a cordless phone.  
NOTE: See pages 25-26 for instructions on deregistration.  
9
Getting started  
Registering the headset  
To register a headset to a TL7610/TL7611/TL7612 DECT  
headset base  
1. Make sure the battery is properly installed  
in the headset (see page 7). The ON/OFF  
light flashes twice every five seconds to  
indicate the headset is not registered.  
2. Place the headset in the headset base or  
charger and allow it to charge for at least  
five minutes before beginning registration.  
3. Remove the headset from the headset  
base or charger.  
4. On the headset base, press and hold  
the PAIR button until the MUTE light on  
the headset base turns on (about four  
seconds) and release the button.  
5. Return the headset to the headset base  
for registration.  
Registration may take about 30 seconds to complete. The MUTE  
light on the headset base turns off. The headset ON/OFF light  
turns blue on the first headset registered and orange on the  
second headset registered.  
To verify registration was successful, press the headset ON/OFF  
button and check for a dial tone.  
If the registration was not successful, the ON/OFF light on the  
headset flashes twice every five seconds. To reset the headset,  
remove the headset from the headset charger and try the  
registration process again.  
10  
Getting started  
Registering the headset  
To register the headset to an AT&T DECT cordless telephone base  
1. Make sure the battery is properly installed in the  
headset (see page 7). The ON/OFF light flashes  
twice every five seconds to indicate the headset  
is not registered.  
2. Place the headset in the headset charger and  
allow it to charge for at least five minutes  
before beginning registration. Remove the  
headset from the charger and then place the  
headset back into the charger.  
3. On the telephone base of the cordless phone,  
press and hold the /HANDSET LOCATOR  
button until the IN USE light turns on (about four  
seconds) and release the button.  
If your telephone base has no HANDSET  
LOCATOR button:  
Press and hold the HOLD button until the screen  
displays Registering... Please wait, then release  
the button.  
-OR-  
Press and hold the LOCATOR button until the screen  
displays Registering handset..., then release the button.  
4. The headset registers to the telephone base automatically; this  
may take about 30 seconds to complete. The headset ON/OFF  
light turns blue on the first headset registered and orange on the  
second headset registered. To verify registration was successful,  
press the headset ON/OFF button and check for a dial tone.  
NOTES:  
If the registration fails, the ON/OFF light on the headset flashes twice every  
five seconds. Reset the headset and try again. Remove the headset from  
the headset base and press ON/OFF. Then place the headset back into the  
headset base. Try the registration process again.  
For users of Synapse , SynJ , MS2085 Console, or MS2015 Deskset, refer  
to the user’s manual of your respective model for registration instructions.  
Synapse and SynJ are trademarks of Advanced American Telephones.  
11  
Getting started  
Headset attachments  
Over the ear hook  
To attach the ear hook to the headset:  
1. Remove any headset attachment connected to the headset.  
2. Insert the earpiece into the ear hook, as shown in Figure 1.  
3. Press the ear hook onto the earpiece, as shown in Figure 2.  
4. Hook the headset onto the desired ear. Adjust the angle of  
the headset until the microphone is pointing towards your  
mouth, as shown in Figure 3.  
Figure 1  
Figure 2  
Figure 3  
NOTE: Firmly grip the earpiece with one hand whenever adjusting the  
headset microphone up or down, as shown in Figure 3.  
12  
Getting started  
Headset attachments  
To adjust the headset to wear on the other ear:  
1. Hold the headset in your hand. Lift the hook upward, as shown  
in Figure 4.  
2. Rotate the hook 180˚ in a counterclockwise direction, as  
shown in Figure 5.  
3. Push the hook downward, as shown in Figure 6.  
4. Hook the headset onto the desired ear. Adjust the angle of the  
headset until the microphone is pointing towards your mouth,  
as shown in Figure 7.  
180˚  
Figure 5  
Figure 4  
Figure 7  
Figure 6  
13  
Getting started  
Headset attachments  
To remove the ear hook from the headset:  
Hold the headset with one hand and the ear hook with the other  
hand. Lift the ear hook up until it separates from the earpiece.  
14  
Getting started  
Headset attachments  
Over the head band  
To attach the headset to the headband for wearing on the left  
or right ear:  
1. Remove any headset attachment currently connected to  
the headset.  
2. Insert the earpiece into the loop of the ear pad, as shown in  
Figure 8.  
3. Gently press the earpiece inward until it clicks into place, as  
shown in Figure 9.  
4. Adjust the headband to fit your head. Adjust and rotate the  
angle of the headset until the microphone is pointing towards  
your mouth, as shown in Figure 10.  
Ear pad  
Figure 8  
Figure 9  
Figure 10  
NOTES:  
• To wear on the other ear, rotate the headset within the loop of the ear pad.  
• Firmly grip the padded earpiece with one hand whenever adjusting the  
headset microphone up or down, as shown in Figure 10.  
15  
Getting started  
Headset attachments  
To remove the headset from the headband:  
Hold the headset with one hand and the headband's ear pad  
with the other hand. Twist and pull the headset until it separates  
from the ear pad.  
16  
Getting started  
Headset attachments  
Behind the neck band  
When first shipped, the ear pad of the neckband is positioned to  
be worn on the right ear.  
To wear the headset on your left ear:  
1. Remove the ear pad from the neckband by carefully pulling  
the stem of the ear pad up through the rectangular socket at  
the end of the neckband, as shown in Figure 11.  
Ear pad  
Figure 11  
2. Snap the stem of the ear pad into the rectangular socket at the  
left end of the neckband.  
To attach the headset to the neckband for wearing on the left  
or right ear:  
1. Remove any headset attachment currently connected to  
the headset.  
2. Insert the earpiece into the loop of the ear pad, as shown in  
Figure 12.  
3. Gently press the earpiece inward until it clicks into place, as  
shown in Figure 13.  
Figure 13  
Figure 12  
17  
Getting started  
Headset attachments  
4. Place the neckband around your neck and over your ears.  
5. Adjust and rotate the angle of the headset until the microphone  
is pointing towards your mouth, as shown in Figure 14.  
Figure 14  
NOTE: Firmly grip the padded earpiece with one hand whenever adjusting  
the headset microphone up or down, as shown in Figure 14.  
To remove the neckband from the headset:  
Hold the headset with one hand and the ear pad with the other  
hand. Twist and pull the headset until it separates from the ear pad.  
18  
Operation  
Headset operation  
Making a call  
If you registered the accessory cordless headset to a headset  
base, see the user’s manual for your headset base model  
TL7610/TL7611/TL7612 for additional instructions. Visit  
download the user's manuals.  
If you registered the accessory cordless headset to an AT&T  
DECT cordless telephone:  
1. Follow the instructions in your telephone user’s manual for  
making calls.  
2. To switch to the headset, press ON/OFF on the headset at  
any time.  
3. After you switch the call to the headset, you can hang up the  
telephone and continue the call on the headset.  
19  
Operation  
Headset operation  
Answering a call on the headset  
Press ON/OFF on the headset.  
Ending a call on the headset  
Press ON/OFF on the headset.  
Auto off  
A call ends automatically when you put the headset in the  
headset charger.  
NOTE: The headset does not have an external ringer. When you receive calls,  
the headset earpiece plays a ring tone only heard through the earpiece.  
20  
Operation  
Headset operation  
Temporary ring tone silencing  
Press MUTE/FLASH to temporarily silence the ring tone in  
the headset earpiece. This silences the ring tone without  
disconnecting the call. The next incoming call rings normally at  
the preset volume.  
NOTE: If you have more than one headset registered to the headset base,  
both headsets receive the ring tone when there is an incoming call.  
Pressing MUTE/FLASH on one headset will only silence the ring tone of that  
particular headset.  
Intercom calls and transfers  
If you have registered your headset to an AT&T DECT cordless  
telephone, follow the instructions in your telephone user’s  
manual for intercom calls and transfers.  
When the cordless handset prompts you to enter a handset number:  
• If you have 1 registered handset, press # (pound key) on the  
cordless handset.  
• If you have 2 registered handsets, press #1 for headset 1 and  
#2 for headset 2.  
NOTE: You can only make intercom calls or transfers from an AT&T DECT  
cordless handset to the DECT cordless headset.  
21  
Operation  
Options while on calls  
Volume control  
To adjust the listening volume:  
+ –  
While on a call, press the VOLUME /  
keys on the side of the  
headset to adjust the listening volume.  
NOTE: When the volume reaches the minimum or maximum setting, you  
hear 3 quick beeps.  
Call waiting  
If you subscribe to call waiting service offered by your telephone  
service provider, you hear a beep if there is an incoming call  
while you are already on a call.  
• If you have registered the TL7600 to a TL7610/TL7611/TL7612  
headset base that is connected to a multiple line or digital  
business corded telephone, you must answer call waiting using  
the corded telephone base (see your telephone user’s manual  
for instructions).  
To end call waiting call, press ON/OFF on the headset and hang  
up the corded handset by placing it in the telephone base.  
• For all other installations, press and hold MUTE/FLASH on  
the side of the headset to put your current call on hold and  
answer the new call. You can press and hold MUTE/FLASH at  
any time to switch back and forth between calls.  
To end a call waiting call, press ON/OFF on the headset.  
22  
Operation  
Options while on calls  
Switching a call between handset and headset  
If you have registered the TL7600 to a TL7610/TL7611/TL7612  
headset base that is plugged into the telephone wall jack:  
• To switch from the corded handset to a headset while on a  
call, press ON/OFF on the headset, then place the corded  
handset back into the telephone base.  
• To switch from a headset to the corded handset while on call,  
lift the corded handset from the telephone base, then press  
ON/OFF on the headset.  
• To switch from a cordless handset to a headset while on a call,  
press ON/OFF on the headset, then hang up the cordless handset.  
• To switch from a headset to a cordless handset while on a call,  
press the button you use to answer a call, then press ON/OFF  
on the headset.  
If you have registered the TL7600 to a TL7610/TL7611/TL7612  
headset base that is connected to a multiple line or digital  
business corded telephone:  
To switch between a headset and the corded handset while on a  
call, press ON/OFF on the headset.  
NOTE: For information about installation options, see the user’s manual  
for your headset base model TL7610/TL7611/TL7612. Visit  
www.telephones.att.com/manuals to view or download  
the user manuals.  
23  
Operation  
Options while on calls  
Multiple headset/handset use  
Headsets and handsets on the same phone line can join an  
external call in progress. The number of headsets and handsets  
that can join may be limited by your telephone system. See your  
telephone user’s manual for more information.  
Join a call with a headset by pressing ON/OFF on the headset. To  
hang up, press ON/OFF or place the headset in the headset charger.  
Mute  
The mute function allows you to turn off the headset microphone.  
You can hear the caller, but the caller cannot hear you.  
To mute the call:  
• Press MUTE/FLASH on the headset to turn off the headset  
microphone. When mute is on, there is a short beep every 15  
seconds until mute is turned off.  
To end mute:  
• Press MUTE/FLASH on the headset again and resume speaking.  
24  
Operation  
Replacing a headset  
You may need to deregister your headsets if:  
You have two registered headsets and need to replace one of them.  
-OR-  
You wish to change the designated headset number and/or the  
colors of the ON/OFF lights of your registered headsets.  
You must first deregister both headsets, and then register each  
headset you wish to use again, one at a time.  
Please read carefully through all the instructions before  
beginning the deregistration process.  
To deregister all headsets from your TL7610/TL7611/TL7612  
headset base  
This procedure deregisters all the items registered to the headset base.  
1. Press and hold PAIR on the TL7610/TL7611/TL7612 headset  
base until the MUTE light on the headset base turns on and starts  
to flash (at least 10 seconds), then release the PAIR button.  
2. Immediately press and release PAIR again. You must press  
PAIR while the MUTE light is still flashing. (The light flashes  
for about seven seconds. If the light stops flashing, start again  
with step one above.)  
3. Enter the following code on the headset by pressing the keys in  
this order: VOLUME /+, MUTE, VOLUME /–, MUTE,  
VOLUME /+, VOLUME /–, MUTE. When you see the MUTE  
light on the headset base turn off and the headset(s) ON/OFF  
light flashes twice every five seconds, the deregistration is  
successful. Repeat this step on the other headset if there is any.  
4. To register the headset(s) to the headset base again, follow  
the registration instructions on page 10.  
NOTES:  
• If the deregistration process was not successful, you may need to reset  
the system and try again. Remove the headset from the headset base and  
press ON/OFF. Place the headset back into the headset base. You may  
also reset by unplugging the power from the headset base, then waiting a  
few seconds, and plugging it back in.  
• You cannot deregister the headset(s) if another system headset is in use.  
25  
Operation  
Replacing a headset  
To deregister all headsets from an AT&T cordless  
telephone base  
This procedure deregisters all the headsets and handsets  
registered to the cordless phone.  
1. Press and hold / HANDSET LOCATOR on the telephone  
base of the cordless phone until the IN USE light on the  
telephone base turns on and starts to flash (at least 10  
seconds), then release the / HANDSET LOCATOR button.  
2. Immediately press and release / HANDSET LOCATOR again.  
You must press / HANDSET LOCATOR while the IN USE  
light is still flashing. (The light flashes for about 7 seconds. If  
the light stops flashing, start again with step one above.) This  
process may take up to 10 seconds to complete.  
If your telephone base has no HANDSET LOCATOR button:  
i. Press and hold the FLASH button until the screen displays  
Deregister all handsets?, then release the button.  
ii. Press the YES softkey.  
-OR-  
i. Press and hold the LOCATOR button until the screen  
displays Registering handset... followed by Deregister all  
handsets?, then release the button.  
ii. Immediately press and release MENU/SELECT again.  
3. Enter the following code on the headset by pressing the keys in  
this order: VOLUME /+, MUTE, VOLUME /–, MUTE,  
VOLUME /+, VOLUME /–, MUTE. The ON/OFF light on the  
headset flashes twice every five seconds if the deregistration  
is successful.  
NOTES:  
• See your telephone user’s manual to register the handsets again.  
• See page 11 of this manual to register a headset again.  
26  
Appendix  
Troubleshooting  
If you have difficulty with your headset, please try the  
suggestions below. For customer service, visit our website at  
www.telephones.att.com, or call 1 (800) 222-3111.  
In Canada, dial 1 (866) 288-4268.  
My headset doesn’t work at all.  
• Make sure the power cord is securely plugged in.  
• Make sure the battery is securely installed in the cordless headset.  
• Make sure the telephone line cord is securely and firmly plugged  
into the headset or telephone base and the telephone wall jack.  
• Charge the battery in the cordless headset for at least 6 hours.  
For optimum daily performance, return the cordless headset to  
its charger when not in use.  
• Reset the headset. Power off the headset and then power it on.  
• Reset the headset base or charger. Unplug the unit’s electrical  
power. Wait for approximately 15 seconds, then plug it back in.  
Allow up to one minute for the cordless headset and headset  
base or charger to reset.  
• You may need a new battery. Please refer to page 7 of this  
user’s manual.  
I cannot get a dial tone.  
• Try all the suggestions above.  
• Move the cordless headset closer to the headset or telephone  
base. You might have moved out of range.  
• If the previous suggestions do not work, disconnect the  
headset or telephone base from the telephone jack and  
connect a different phone. If there is no dial tone on that  
phone either, the problem is in your wiring or telephone  
service. Contact your telephone service provider.  
• Your telephone line cord might be defective. Try installing a  
new telephone line cord.  
27  
Appendix  
Troubleshooting  
I am getting a buzzing sound on my headset or corded base  
speakerphone.  
• Your telephone may experience interference from the headset.  
To overcome this problem, move the headset base at least 12  
inches away from the telephone.  
• Other electronic products such as HAM radios and other DECT  
phones can cause interference with your cordless headset.  
Try installing your headset as far away as possible from these  
types of electronic devices.  
I cannot dial out.  
• Try all the suggestions above.  
• Make sure you have a dial tone before dialing. The cordless  
headset may take a second or two to find the headset or  
telephone base and produce a dial tone. This is normal. Wait  
an extra second before dialing.  
• Eliminate any background noise. Noise from a television, radio  
or other appliances may cause the headset to not dial out  
properly. If you cannot eliminate background noise, try dialing  
from another room with less background noise.  
• If the other phones in your home are having the same  
problem, the problem is in your wiring or local service. Contact  
your telephone service provider (charges may apply).  
The other party cannot hear my voice during a call.  
• If you registered the accessory cordless headset to a headset  
base, try adjusting the speaking volume setting on the headset  
base. See the volume section of the user’s manual for your  
headset base model TL7610/TL7611/TL7612 for additional  
troubleshooting. Visit www.telephones.att.com/manuals  
to view or download the user manuals.  
28  
Appendix  
Troubleshooting  
My cordless headset isn’t performing normally.  
• Make sure the power cord is securely plugged into the  
headset base or charger. Plug the unit into a different, working  
electrical outlet not controlled by a wall switch.  
• Move the cordless headset closer to the headset or telephone  
base. You might have moved out of range.  
• Reset the headset base or charger. Unplug the unit’s electrical  
power. Wait for 15 seconds, then plug it back in. Allow up  
to one minute for the cordless headset and headset base or  
charger to reset.  
• Other electronic products such as HAM radios and other DECT  
phones can cause interference with your cordless headset.  
Try installing your headset as far away as possible from these  
types of electronic devices.  
I want to use my headset with a different headset base or  
cordless telephone.  
• You need to deregister (see pages 25-26) the headset from  
the current headset or telephone base and then register (see  
pages 9-11) it to a new headset base or cordless telephone.  
The batteries do not hold a charge.  
• Make sure that the headset battery is installed and securely  
plugged into the connector.  
• If the cordless headset is in the headset base or charger and  
the ON/OFF light on the headset does not come on, refer to  
The ON/OFF light on the headset is off while charging in  
this Troubleshooting guide (page 32).  
• Charge the battery in the cordless headset for at least 6 hours.  
For optimum daily performance, return the cordless headset to  
the headset or charger when not in use.  
29  
Appendix  
Troubleshooting  
• You may need a new battery. Please refer to the  
Battery charging section on page 8.  
• Your headset might be defective. Please refer to the  
Limited warranty section on pages 45-48 for further  
instructions.  
I get noise, static, or weak signal even when I’m near the  
headset or telephone base.  
• If you subscribe to high-speed Internet service (DSL - digital  
subscriber line) through your telephone lines, you must  
install a DSL filter between the telephone line cord and the  
telephone wall jack. The filter prevents noise and caller ID  
problems caused by DSL interference. Please contact your DSL  
service provider for more information about DSL filters.  
• You may be able to improve the performance of your cordless  
headset by installing your new headset base farther from any  
other existing cordless telephone system.  
• Other electronic products such as HAM radios and other DECT  
phones can cause interference with your cordless headset.  
Try installing your headset as far away as possible from these  
types of electronic devices.  
• Do not install this headset near a microwave oven or on  
the same electrical outlet. You may experience decreased  
performance while the microwave oven is operating.  
• If your headset is plugged in with a modem or a surge  
protector, plug the headset (or modem/surge protector) into  
a different location. If this doesn't solve the problem, relocate  
your headset or modem farther apart from one another, or use  
a different surge protector.  
• Relocate your headset or telephone base to a higher location.  
You may experience better reception by elevating the headset  
or telephone base.  
• If the other phones in your home are having the same  
problem, the problem is in your wiring or telephone service.  
Contact your telephone service provider (charges may apply).  
30  
Appendix  
Troubleshooting  
I hear other calls while using my headset.  
• Disconnect the headset or telephone base from the telephone  
jack, and plug in a different telephone. If you still hear other  
calls, the problem is probably in your building’s wiring or local  
service. Call your telephone service provider.  
I cannot hear a ring tone from the headset when there is an  
incoming call.  
• If you have pressed MUTE/FLASH on the headset when it is  
ringing, it mutes the ring tone of the headset. The ring tone  
resumes on the next call.  
• You may have too many extension phones on your telephone  
line to allow all of them to ring simultaneously. Try unplugging  
some of the other phones.  
• The layout of your home or office might be limiting the  
operating range. Try moving the headset or telephone base to  
another location, preferably on an upper floor.  
• Test a working phone at the phone jack. If another phone has the  
same problem, the problem is the phone jack, wiring or service.  
Contact your telephone service provider (charges may apply).  
• Other electronic products such as HAM radios and other DECT  
phones can cause interference with your cordless headset.  
Try installing your headset as far away as possible from these  
types of electronic devices.  
• Install the battery again, and place the cordless headset in  
the headset base or charger. Wait for the cordless headset to  
reestablish its connection with the headset or telephone base.  
Allow up to one minute for this to take place.  
• Your telephone line cord might be defective. Try installing a  
new telephone line cord.  
31  
Appendix  
Troubleshooting  
My calls cut in and out while I’m using my cordless headset.  
• Other electronic products such as HAM radios and other DECT  
phones can cause interference with your cordless headset.  
Try installing your headset as far away as possible from these  
types of electronic devices.  
• Do not install this headset near a microwave oven or on  
the same electrical outlet. You may experience decreased  
performance while the microwave oven is operating.  
• If your headset is plugged in with a modem or surge protector,  
plug the headset (or modem/surge protector) into a different  
location. If this doesn't solve the problem, relocate your  
headset or modem farther apart from one another, or use a  
different surge protector.  
• Relocate your headset or telephone base to a higher location.  
You may experience better reception by elevating the base.  
• If the other phones in your home are having the same  
problem, the problem is in your wiring or local service. Contact  
your telephone service provider (charges may apply).  
The ON/OFF light on the headset is off while charging.  
• Make sure the power and line cords are plugged in correctly  
and securely.  
• Make sure that the battery connector is securely plugged into  
the cordless headset.  
• Push the headset downwards in the charger until the ON/OFF  
light on the headset turns on.  
• Unplug the unit’s electrical power. Wait for 15 seconds,  
then plug it back in. Allow up to one minute for the cordless  
headset and headset base or charger to reset.  
• Clean the cordless headset and headset base or charger  
charging contacts each month using a pencil eraser or cloth.  
32  
Appendix  
Troubleshooting  
• Your headset or headset base might be defective. Please refer  
to the Limited warranty section on pages 45-48 for further  
instructions.  
I cannot register the headset.  
For registration to a cordless telephone:  
• You must be using a compatible AT&T DECT 6.0 cordless  
for a list of compatible telephones.  
• Your cordless telephone has a maximum number of handsets  
that may be registered to the telephone base. In terms of  
registration, the telephone base treats a headset like a handset.  
Check the Adding and registering handsets section of your  
telephone user’s manual for the maximum number of handsets  
allowed. If the maximum number of handsets are already  
registered, you need to follow the deregistration instructions in  
the telephone user’s manual, then register the handsets and/or  
headsets you wish to use again, one at a time.  
For registration to a headset base:  
• You can register a maximum of two headsets to the headset  
base. If you already have two headsets registered to the  
headset base, you must deregister all the headset(s) before  
you register a different headset.  
• If you registered the accessory cordless headset to a headset  
base, see the user’s manual for your headset base model  
TL7610/TL7611/TL7612 for additional troubleshooting. Visit  
download the user's manuals.  
33  
Appendix  
Troubleshooting  
Common cure for electronic equipment.  
If the unit does not seem to be responding normally, try putting  
the cordless headset in its base or charger. If it does not seem to  
respond, do the following (in the order listed):  
• Disconnect the power to the headset charger and the headset  
or telephone base.  
• Disconnect the cordless headset battery.  
• Wait a few minutes.  
• Connect power to everything you unplugged.  
• Install the battery again, and place the cordless headset into  
the headset base or charger.  
• Wait for the cordless headset to reestablish its connection  
with the headset or telephone base. Allow up to one minute  
for this to take place.  
34  
Appendix  
Important safety information  
This symbol is to alert you to important operating or  
servicing instructions that may appear in this user’s manual.  
Always follow basic safety precautions when using this product  
to reduce the risk of injury, fire, or electric shock.  
Safety information  
• Read and understand all instructions in the user’s manual.  
Observe all markings on the product.  
• Avoid using a headset during a thunderstorm. There may be  
a slight chance of electric shock from lightning.  
• Do not use a headset in the vicinity of a gas leak. Under  
certain circumstances, a spark may be created when the  
adapter is plugged into the power outlet, or when the headset  
is replaced in its cradle. This is a common event associated with  
the closing of any electrical circuit. The user should not plug  
the headset base into a power outlet, and should not put a  
charged headset into the cradle, if the headset base is located  
in an environment containing concentrations of flammable or  
flame-supporting gases, unless there is adequate ventilation.  
A spark in such an environment could create a fire or explosion.  
Such environments might include: medical use of oxygen  
without adequate ventilation; industrial gases (cleaning solvents;  
gasoline vapors; etc.); a leak of natural gas; etc.  
• Do not use this product near water, or when you are wet.  
For example, do not use it in a wet basement or shower, or  
next to a swimming pool, bathtub, kitchen sink, or laundry tub.  
Do not use liquids or aerosol sprays for cleaning. If the product  
comes in contact with any liquids, unplug any line or power  
cord immediately. Do not plug the product back in until it has  
dried thoroughly.  
• Install this product in a protected location where no one can  
trip over any line or power cords. Protect cords from damage  
or abrasion.  
35  
Appendix  
Important safety information  
• If this product does not operate normally, see the  
Troubleshooting section on pages 27-34 of this user’s  
manual. If you cannot solve the problem, or if the product is  
damaged, refer to the Limited warranty section on  
pages 45-48. Do not open this product except as may be  
directed in your user’s manual. Opening the product or  
reassembling it incorrectly may expose you to hazardous  
voltages or other risks.  
• Replace batteries only as described in your user’s manual. Do  
not burn or puncture batteries — they contain caustic chemicals.  
• This power adapter is intended to be correctly oriented in a  
vertical or floor mount position. The prongs are not designed  
to hold the plug in place if it is plugged into a ceiling,  
under-the-table or cabinet outlet.  
Caution: Use only the power adapter provided with this product. To  
owbwtaiwn .aterelpelapchemoennet,sv.iasittto.ucrowmebosirtecaaltl 1 (800) 222-3111.  
In Canada dial 1 (866) 288-4268.  
Especially about cordless headsets  
• Privacy: The same features that make a cordless headset  
convenient create some limitations. Telephone calls are  
transmitted between the headset base and the headset by  
radio waves, so there is a possibility that your cordless headset  
conversations could be intercepted by radio receiving equipment  
within range of the cordless headset. For this reason, you  
should not think of cordless headset conversations as being  
as private as those on corded telephones.  
• Electrical power: The headset base of this cordless headset  
must be connected to a working electrical outlet which is not  
controlled by a wall switch. Calls cannot be made from the  
headset if the headset base is unplugged or switched off, or  
if the electrical power is interrupted.  
36  
Appendix  
Important safety information  
• Potential TV interference: Some cordless headsets operate  
at frequencies that may cause interference to TVs and VCRs.  
To minimize or prevent such interference, do not place the  
headset base of the cordless headset near or on top of a TV  
or VCR. If interference is experienced, moving the cordless  
headset farther away from the TV or VCR will often reduce or  
eliminate the interference.  
• Rechargeable batteries: This product contains nickel-  
cadmium, nickel-metal hydride or lithium-ion rechargeable  
batteries. Exercise care in handling batteries in order not to  
create a short circuit with conductive material such as rings,  
bracelets, and keys. The battery or conductor may overheat  
and cause harm. Observe proper polarity between the battery  
and the battery charger.  
• Lithium-ion rechargeable batteries: Dispose of these  
batteries in a safe manner. Do not burn or puncture. Like  
other batteries of this type, if burned or punctured, they could  
release caustic material which could cause injury.  
The RBRC™ Seal means that the manufacturer is voluntarily  
participating in an industry program to collect and recycle  
lithium-ion rechargeable batteries when taken out of service  
within the United States. These batteries may be taken to a  
participating local retailer of replacement batteries or recycling  
center. Or you may call 1-800-8-BATTERY for locations  
accepting spent Li-ion batteries.  
CAUTION  
• Use only the batteries provided or their equivalent.  
• Change this product’s batteries only in accordance with the  
instructions and limitations specified in this manual.  
• As with any batteries, do not allow conductive materials such  
as rings, bracelets, or keys to come in contact with the metallic  
parts of the battery. The battery or conductor may overheat  
and cause harm.  
37  
Appendix  
Important safety information  
• Do not open or damage the batteries. Released electrolyte  
is corrosive and may cause injury to the eyes or skin. The  
electrolyte may be toxic if swallowed.  
• Do not dispose of the batteries in a fire. Check with local  
waste management codes for special disposal instructions.  
• To prevent fire or shock hazard, do not expose this product to  
water or any type of moisture.  
• Observe proper polarity orientation between the battery and  
metallic contacts.  
• Do not disassemble your telephone. There are no user-serviceable  
parts inside. Refer to qualified service personnel for servicing.  
Precautions for users of implanted cardiac pacemakers  
Cardiac pacemakers (applies only to digital cordless telephones):  
Wireless Technology Research, LLC (WTR), an independent  
research entity, led a multidisciplinary evaluation of the  
interference between portable cordless telephones and implanted  
cardiac pacemakers. Supported by the U.S. Food and Drug  
Administration, WTR recommends to physicians that:  
Pacemaker patients  
• Should keep cordless telephones at least six inches from  
the pacemaker.  
• Should NOT place cordless telephones directly over the  
pacemaker, such as in a breast pocket, when it is turned ON.  
• Should use the cordless telephone at the ear opposite the pacemaker.  
WTR’s evaluation did not identify any risk to bystanders with  
pacemakers from other persons using cordless telephones.  
SAVE THESE INSTRUCTIONS  
38  
Appendix  
Maintenance  
Taking care of your headset  
• Your cordless headset contains sophisticated electronic parts,  
so it must be treated with care.  
• Avoid rough treatment.  
• Place the headset down gently. Save the original packing  
materials to protect your headset if you ever need to ship it.  
Avoid water  
• Your headset can be damaged if it gets wet. Do not use the  
headset outdoors in the rain, or handle it with wet hands. Do  
not install the headset base near a sink, bathtub or shower.  
Electrical storms  
• Electrical storms can sometimes cause power surges harmful to  
electronic equipment. For your own safety, take caution when  
using electrical appliances during storms.  
Cleaning your headset  
• Your headset has a durable plastic casing that should retain  
its luster for many years. Clean it only with a soft cloth slightly  
dampened with water or a mild soap.  
• Do not use excess water or cleaning solvents of any kind.  
Remember that electrical appliances can cause serious injury if used when  
you are wet or standing in water. If the headset base should fall into water,  
DO NOT RETRIEVE IT UNTIL YOU UNPLUG THE POWER CORD AND TELEPHONE  
LINE CORDS FROM THE WALL. Then pull the unit out by the unplugged cords.  
39  
Appendix  
FCC Part 68 and ACTA  
This equipment complies with Part 68 of the FCC rules and with  
technical requirements adopted by the Administrative Council for  
Terminal Attachments (ACTA). The label on the back or bottom of  
this equipment contains, among other things, a product identifier  
in the format US: AAAEQ##TXXXX. This identifier must be provided  
to your local telephone company upon request.  
The plug and jack used to connect this equipment to premises  
wiring and the telephone network must comply with applicable  
Part 68 rules and technical requirements adopted by ACTA. A  
compliant telephone cord and modular plug is provided with this  
product. It is designed to be connected to a compatible modular  
jack that is also compliant. An RJ11 jack should normally be used  
for connecting to a single line and an RJ14 jack for two lines. See  
Installation Instructions in the user’s manual.  
The Ringer Equivalence Number (REN) is used to determine how  
many devices you may connect to your telephone line and still  
have them ring when you are called. The REN for this product is  
encoded as the 6th and 7th characters following the US: in the  
product identifier (e.g. if ## is 03, the REN is 0.3). In most, but  
not all areas, the sum of all RENs should be five (5.0) or less. For  
more information, please contact your local telephone company.  
This equipment may not be used with Party Lines. If you have  
specially wired alarm dialing equipment connected to your  
telephone line, ensure the connection of this equipment does not  
disable your alarm equipment. If you have questions about what  
will disable alarm equipment, consult your telephone company or  
a qualified installer.  
If this equipment is malfunctioning, it must be unplugged from  
the modular jack until the problem has been corrected. Repairs to  
this telephone equipment can only be made by the manufacturer  
or its authorized agents. For repair procedures, follow the  
instructions outlined under the Limited Warranty.  
40  
Appendix  
FCC Part 68 and ACTA  
If this equipment is causing harm to the telephone network, the  
telephone company may temporarily discontinue your telephone  
service. The telephone company is required to notify you before  
interrupting service. If advance notice is not practical, you will be  
notified as soon as possible. You will be given the opportunity  
to correct the problem and the telephone company is required  
to inform you of your right to file a complaint with the FCC. Your  
telephone company may make changes in its facilities, equipment,  
operation, or procedures that could affect the proper functioning  
of this product. The telephone company is required to notify you  
if such changes are planned.  
If this product is equipped with a corded or cordless handset, it is  
hearing aid compatible.  
If this product has memory dialing locations, you may choose to  
store emergency telephone numbers (e.g. police, fire, medical)  
in these locations. If you do store or test emergency numbers,  
please:  
Remain on the line and briefly explain the reason for the call  
before hanging up.  
Perform such activities in off-peak hours, such as early morning  
or late evening.  
41  
Appendix  
FCC Part 68 and ACTA  
Industry Canada  
Operation is subject to the following two conditions: (1) this  
device may not cause harmful interference, and (2) this device  
must accept any interference, including interference that may  
cause undesired operation.  
The term ‘’IC:‘’ before the certification/registration number only  
signifies that the Industry Canada technical specifications were met.  
The Ringer Equivalence Number (REN) for this terminal equipment  
is 0.1. The REN is an indication of the maximum number of  
devices allowed to be connected to a telephone interface. The  
termination on an interface may consist of any combination of  
devices subject only to the requirement that the sum of the RENs  
of all the devices does not exceed five.  
This product meets the applicable Industry Canada technical  
specifications.  
42  
Appendix  
FCC Part 15  
This equipment has been tested and found to comply with the  
requirements for a Class B digital device under Part 15 of the  
Federal Communications Commission (FCC) rules.  
These requirements are intended 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 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/TV technician  
for help.  
Changes or modifications to this equipment not expressly  
approved by the party responsible for compliance could void the  
user’s authority to operate the equipment.  
This device complies with Part 15 of the FCC Rules. Operation  
is subject to the following two conditions: (1) this device may  
not cause harmful interference, and (2) this device must accept  
any interference received, including interference that may cause  
undesired operation. Privacy of communications may not be  
ensured when using this device.  
43  
Appendix  
FCC Part 15  
To ensure safety of users, the FCC has established criteria for the  
amount of radio frequency energy that can be safely absorbed  
by a user or bystander according to the intended usage of the  
product. This product has been tested and found to comply with  
the FCC criteria. The headset may be safely held against the ear  
of the user. The headset base shall be installed and used such  
that parts of the user’s body other than the hands are maintained  
at a distance of approximately 20 cm (8 inches) or more.  
This Class B digital apparatus complies with Canadian ICES-003.  
44  
Appendix  
Limited warranty  
The AT&T brand is used under license - any repair, replacement or  
warranty service, and all questions about this product should be  
directed to: In the United States of America, visit  
www.telephones.att.com or call 1 (800) 222-3111.  
In Canada, call 1 (866) 288-4268.  
1. What does this limited warranty cover?  
The manufacturer of this AT&T branded product warrants to the  
holder of a valid proof of purchase (“CONSUMER” or “you”) that  
the product and all accessories provided in the sales package  
(“PRODUCT”) are free from defects in material and workmanship,  
pursuant to the following terms and conditions, when installed  
and used normally and in accordance with the PRODUCT  
operating instructions. This limited warranty extends only to the  
CONSUMER for products purchased and used in the United States  
of America and Canada.  
2. What will be done if the PRODUCT is not free from defects  
in materials and workmanship during the limited warranty  
period (“materially defective PRODUCT”)?  
During the limited warranty period, the manufacturer’s authorized  
service representative will repair or replace at the manufacturer’s  
option, without charge, a materially defective PRODUCT. If the  
manufacturer repairs the PRODUCT, they may use new or refurbished  
replacement parts. If the manufacturer chooses to replace the  
PRODUCT, they may replace it with a new or refurbished PRODUCT  
of the same or similar design. The manufacturer will retain  
defective parts, modules, or equipment. Repair or replacement  
of the PRODUCT, at the manufacturer’s option, is your exclusive  
remedy. The manufacturer will return repaired or replacement  
products to you in working condition. You should expect the  
repair or replacement to take approximately 30 days.  
45  
Appendix  
Limited warranty  
3. How long is the limited warranty period?  
The limited warranty period for the PRODUCT extends for ONE (1)  
YEAR from the date of purchase. If the manufacturer repairs or  
replaces a materially defective PRODUCT under the terms of this  
limited warranty, this limited warranty also applies to repaired or  
replacement PRODUCT for a period of either (a) 90 days from the  
date the repaired or replacement PRODUCT is shipped to you or  
(b) the time remaining on the original one-year limited warranty;  
whichever is longer.  
4. What is not covered by this limited warranty?  
This limited warranty does not cover:  
• PRODUCT that has been subjected to misuse, accident,  
shipping or other physical damage, improper installation,  
abnormal operation or handling, neglect, inundation, fire,  
water, or other liquid intrusion; or  
• PRODUCT that has been damaged due to repair, alteration,  
or modification by anyone other than an authorized service  
representative of the manufacturer; or  
• PRODUCT to the extent that the problem experienced is  
caused by signal conditions, network reliability or cable or  
antenna systems; or  
• PRODUCT to the extent that the problem is caused by use with  
non-AT&T accessories; or  
• PRODUCT whose warranty/quality stickers, PRODUCT serial  
number plates or electronic serial numbers have been  
removed, altered or rendered illegible; or  
• PRODUCT purchased, used, serviced, or shipped for repair from  
outside the United States of America or Canada, or used for  
commercial or institutional purposes (including but not limited  
to products used for rental purposes); or  
• PRODUCT returned without valid proof of purchase (see item 6  
below); -or-  
46  
Appendix  
Limited warranty  
• Charges for installation or setup, adjustment of customer  
controls, and installation or repair of systems outside the unit.  
5. How do you get warranty service?  
To obtain warranty service in the United States of America, visit  
www.telephones.att.com or call 1 (800) 222-3111. In  
Canada, call 1 (866) 288-4268.  
NOTE: Before calling for service, please review the user’s manual;  
a check of the PRODUCT controls and features may save you a  
service call.  
Except as provided by applicable law, you assume the risk of loss  
or damage during transit and transportation and are responsible  
for delivery or handling charges incurred in the transport of the  
PRODUCT(s) to the service location. The manufacturer will return  
repaired or replaced PRODUCT under this limited warranty to  
you. Transportation, delivery or handling charges are prepaid.  
The manufacturer assumes no risk for damage or loss of the  
PRODUCT in transit. If the PRODUCT failure is not covered by this  
limited warranty, or proof of purchase does not meet the terms  
of this limited warranty, the manufacturer will notify you and will  
request that you authorize the cost of repair prior to any further  
repair activity. You must pay for the cost of repair and return  
shipping costs for the repair of products that are not covered by  
this limited warranty.  
6. What must you return with the PRODUCT to get warranty service?  
You must:  
a. Return the entire original package and contents including the  
PRODUCT to the service location along with a description of  
the malfunction or difficulty; and  
b. Include “valid proof of purchase” (sales receipt) identifying  
the PRODUCT purchased (PRODUCT model) and the date of  
purchase or receipt; and  
c. Provide your name, complete and correct mailing address, and  
telephone number.  
47  
Appendix  
Limited warranty  
7. Other limitations  
This warranty is the complete and exclusive agreement between  
you and the manufacturer of this AT&T branded PRODUCT. It  
supersedes all other written or oral communications related to  
this PRODUCT. The manufacturer provides no other warranties  
for this PRODUCT. The warranty exclusively describes all of the  
manufacturer’s responsibilities regarding the PRODUCT. There  
are no other express warranties. No one is authorized to make  
modifications to this limited warranty and you should not rely on  
any such modification.  
State/Provincial Law rights: This warranty gives you specific legal  
rights, and you may also have other rights which vary from state  
to state or province to province.  
Limitations: Implied warranties, including those of fitness for a  
particular purpose and merchantability (an unwritten warranty  
that the PRODUCT is fit for ordinary use) are limited to one  
year from date of purchase. Some states/provinces do not  
allow limitations on how long an implied warranty lasts, so  
the above limitation may not apply to you. In no event shall  
the manufacturer be liable for any indirect, special, incidental,  
consequential, or similar damages (including, but not limited to  
lost profits or revenue, inability to use the PRODUCT or other  
associated equipment, the cost of substitute equipment, and  
claims by third parties) resulting from the use of this PRODUCT.  
Some states/provinces do not allow the exclusion or limitation of  
incidental or consequential damages, so the above limitation or  
exclusion may not apply to you.  
Pleaseretainyouroriginalsalesreceiptasproofofpurchase.  
48  
Appendix  
Technical specifications  
RF frequency band  
Channels  
1921.536MHz - 1928.448MHz  
5
Operating temperature  
32°F - 122°F  
0°C - 50°C  
Headset voltage  
3.2 - 4.2VDC  
Charger voltage  
(AC adapter output)  
6VDC @200mA  
Replacement battery  
3.7V 240mAH  
DECT 6.0 digital technology  
Digital Enhanced Cordless Telecommunications (DECT) 6.0 is a new  
frequency band that transmits your voice across multiple channels.  
This technology provides superior quality of voice and sound, high  
protection against wiretapping and better range than 2.4 GHz and  
5.8 GHz phone systems, while not interfering with wireless routers.  
Operating range  
This cordless headset operates within the maximum power  
allowed by the Federal Communications Commission (FCC).  
Even so, this headset and headset base can communicate over  
only a certain distance — which can vary with the locations of  
the headset base and headset, the weather, and the construction  
of your home or office.  
Extended range and clarity  
Experience the best in long-range coverage and clarity, provided by  
a unique antenna design and advances in noise-filtering technology.  
The TL7600 is a fully cordless DECT 6.0 headset offering a range  
of up to 500 feet. Open range test was performed by Wyle  
Laboratories, an independent commercial test facility. “Up to 500  
feet” cordless headset range refers to the maximum open field  
range. Actual range may vary depending on intervening obstacles.  
Sound level protection technology conforms to the current  
regulations and is used to filter out the loud and high-pitched noises.  
49  
Index  
Index  
A
M
Alert tone 3  
Maintenance 39  
Make a call 19  
Multiple headset/  
handset use 24  
Mute 24  
Answer a call 20  
Auto off 20  
B
Battery charging 8  
Behind the neck band 17–18  
O
Over the ear hook 12–14  
Over the head band 15–16  
C
Call waiting 22  
Q
Quick reference guide  
D
Headset 1–3  
Deregister all headsets 25–26  
Dial tone 27  
Headset charger 4  
R
E
Register a headset 9  
Replace a headset 25  
End a call 20  
F
S
FCC Part 15 43–44  
FCC Part 68 and ACTA 40–42  
Switch a call 23  
T
I
Technical specifications 49  
Temporary ring tone  
silencing 21  
Important safety information  
35–38  
Installation  
Troubleshooting 27–34  
battery 7  
charger 6  
V
Intercom 21  
Volume 22  
L
Lights 1  
Limited warranty 45–48  
50  
© 2008-2012 Advanced American Telephones. All Rights Reserved.  
AT&T and the AT&T logo are trademarks of AT&T Intellectual Property licensed to  
Advanced American Telephones, San Antonio, TX 78219.  
Synapse and SynJ are trademarks of Advanced American Telephones.  
Printed in China. Issue 12 AT&T 10/12.  

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