AT&T TL7710 User Manual

User’s manual

TL7710

DECT 6.0 cordless headset

Congratulations

on your purchase of this AT&T product. Before using this AT&T
product, please read the Important safety information section
on pages 50-53 of this manual. Please thoroughly read this
user’s manual for all the feature operations and troubleshooting
information necessary to install and operate your new AT&T
product. You can also visit our website at

www.telephones.att.com

or call

1 [phone].

In Canada, dial

1 [phone].

Model number: TL7710 (Headset and headset base)
Type: DECT 6.0 cordless headset

Serial number:
Purchase date:
Place of purchase:

Both the model and serial numbers of your AT&T product can be
found on the bottom of the headset base.

Save your sales receipt and original packaging in case it is
necessary to return your telephone for warranty service.

© 2010 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. Printed in China.

Headset baseCordless headset
with medium-sized
earbud attached

Telephone
line cord

User's manual Quick start guide

Headset base
power adapter

Over-the-ear hook

Behind-the-neck
band

Over-the-head band

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.

Line splitterBattery pack
(battery
with battery
compartment
cover attached)

User’s manual

TL7710

DECT 6.0 cordless headset

Quick start guide

TL7710

DECT 6.0 cordless headset

USB cable2 earbuds

Corded phone
interface cable

Optional accessories

In this manual, there are references to TL7100 and TL7700.
The TL7100 is a lifter and TL7700 is an expansion headset with
charger, purchased separately. For more information about these
products, see the user’s manuals. You may also download the
manuals at www.telephones.att.com.

TL7100 TL7700

User’s manual

TL7710

DECT 6.0 cordless headset

Table of contents

Getting started

Quick reference guide -

headset......................................... 1

Quick reference guide -

headset base............................. 2

Installation...................................... 4

Headset base installation........ 5

For calls using the phone

line.................................................. 5

For calls using your

computer..................................... 7

Connect your headset to

your computer.......................... 7

Headset base settings .............. 8

Corded handset connection

switch............................................ 8

Battery installation..................... 9

Battery charging.........................10

Add and register headsets .... 11

For Synapse users..................12

For SynJ users.......................... 12

To register a headset to the

headset base............................13

To register a headset to

an AT&T DECT cordless

telephone base .......................14

Replace a headset ....................15

To deregister all headsets

from the headset base........15

To deregister the headset(s)

from an AT&T DECT cordless

telephone base .......................16

Headset attachments...............17

Earbud..........................................17

Over-the-ear hook.................18

Over-the-head band .............21

Behind-the-neck band ......... 23

Operation

Headset operation ..................... 25

Power on/off the

headset........................................ 25

Phone mode and PC

mode ............................................25

Make a call.................................26

Answer a call............................ 27

End a call.................................... 27

Headset ringer ......................... 28

Temporary ringer

silencing...................................... 28

Options while on calls.............29

Volume control........................29

Call waiting................................ 29

Mute .............................................. 30

Switch a call between the

handset and headset ..........30

Multiple headsets/handsets

use.................................................31

Intercom..........................................32

Answer an intercom call..... 32

Answer an incoming call

during an intercom call....... 32

End an intercom call.............32

PC mode.........................................33

Turn on PC mode ................... 33

Configure your audio

settings........................................ 33

Make or answer a call in

PC mode.....................................33

Switch between PC mode

and PHONE mode..................34

Conference PHONE and PC

calls...............................................35

Appendix

Alert tones and lights .............. 36

Headset alert tones............... 36

Headset lights .......................... 37

Headset base lights............... 38

Troubleshooting..........................39

Important safety

information................................50

Safety information..................50

Especially about cordless

headsets .....................................51

Precautions for users

of implanted cardiac

pacemakers...............................53

Pacemaker patients...............53

Maintenance..................................54

FCC Part 68 and ACTA.............55

FCC Part 15................................... 58

Limited warranty......................... 60

Technical specifications..........64

DECT 6.0 digital

technology................................. 64

Operating range...................... 64

Extended range and

clarity ...........................................64

Index

Index.................................................65

Quick reference guide - headset

VOL+/VOL-

Push the volume switch on the top
of the headset to the right or left
to adjust the headset ringer volume
while in idle mode (page 28) or the
listening volume while on a call
(page 29).

(On/off button and light)

Press to make, answer and end a call (pages 26-27).

On when the headset is charging in the headset base.
Flashes once every 10 seconds in red light when the headset is

in low battery mode.
Flashes twice every three seconds in blue light when the

headset is in use.
Flashes four times every three seconds in blue light when there

is an incoming call.
Flashes quickly and alternately in red and blue when the

headset is being registered.
Flashes slowly and alternately in red and blue when the

headset is being deregistered.

Earpiece

Battery pack

Open to replace the battery pack.

Microphone

MUTE/FLASH

Press to mute the microphone
during a call (page 30).

Press and hold for two seconds to
answer an incoming call when you
receive a call waiting alert during a
call (page 29).

Press to mute the ringer in the
earpiece when there is an incoming
call (page 30).

Getting started

1

Quick reference guide - headset base

Corded handset audio adjust switch

This switch is only used with the corded
telephone handset connected to the
corded phone interface cable (page 6).

Charging cradle

Place the headset here for charging.

MUTE (light)

On when the mute function is on.

PAIR

Use to initiate headset registration
or deregistration.

PHONE (mode button and light)

On when the home or office phone
line is chosen for calls.

Flashes twice every three seconds
when the headset is in use.

Flashes four times every three seconds
when there is an incoming call.

PC (mode button and light)

On when the PC is chosen for calls.
Flashes twice every three seconds

when the headset is in use.

Getting started

2

MICROPHONE/ VOLUME

Press the volume keys on the side
of the headset base to adjust the
speaking volume when on a call
(page 29).

Quick reference guide - headset base

CORDED HANDSET CONNECTED/
YES/NO

Choose the setting based on whether
you are using a corded handset
(page 8).

TEL WALL JACK (red dot)

POWER jack
(green dot)

CORDED PHONE CONNECTION

This jack (orange dot) is only used
with corded phone interface cable
connecting to the corded telephone.

Getting started

3

LIFTER

This jack is only used with an AT&T
handset lifter (model TL7100 or
TL7711, purchased separately).

(USB port)

Open the port cover to plug in the USB
cable when in PC mode (page 33).

Installation

See pages 9-10
for easy instructions.

You must install and

charge the battery before

using the headset.

STOP!

If you subscribe to high-speed Internet service (DSL - digital
subscriber line) through your telephone line, you must install a
DSL filter between the telephone line cord and telephone wall
jack (see pages 5-6). 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 [phone].

In Canada, dial 1 [phone].

Avoid placing the headset base 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 the washing

machine or work bench.

Getting started

4

Getting started

5

Headset base installation

For calls using the phone line

You can use your DECT cordless headset for calls through your
telephone line with or without a telephone. You can also plug
the headset directly into a telephone jack without the splitter. If
you plug the headset into a telephone line without a telephone
connected to the line, you will not be able to make calls.

Connect your headset to a telephone wall jack:

Use the included line splitter to connect the headset and your
telephone to the same telephone jack.

NOTE: The headset base and headset do not have an external ringer. When

you receive calls, the headset earpiece plays an alert tone. If you have
telephones connected to the same telephone line as the headset base, you
can rely on the ringers of those telephones to alert you to incoming calls.

Plug the small end
of the headset
base power
adapter into the
POWER jack
(green dot) at
the back of the
headset base.

•

Plug one end of the telephone
line cord into the TEL WALL
JACK (red dot) at the back of
the telephone base.

•

DSL filter (not included)
is required if you have
DSL high-speed Internet
service.

Telephone
line cord

Plug the other end
of the telephone line
cord into the line
splitter.

•

Plug the headset
base power
adapter into an
electrical outlet
not controlled by
a wall switch.

•

Line
splitter

Corded or
cordless phone

Plug the line splitter
into the telephone
wall jack (or DSL
filter if you subscribe
to DSL Internet
service).

•

Connect another
telephone line cord
between the telephone
and the line splitter.

•

6

Getting started

Headset base installation

Connect your headset to a corded telephone and its corded
headset:

Use the included corded phone interface cable to connect the
headset to your corded telephone. Then plug the curly handset
corded into the small box of the cable. You must slide the
CORDED HANDSET CONNECTED switch on the headset base to
select YES (page 8) for using the headset.

NOTE: The headset base and headset do not have an external ringer. When you

receive calls, the headset earpiece plays an alert tone. If you have telephones
connected to the same telephone line as the headset base, you can rely on the
ringers of those telephones to alert you to incoming calls.

Plug the small end
of the headset
base power
adapter into the
POWER jack
(green dot) at
the back of the
headset base.

•

Plug one end of the
corded phone interface
cable into the CORDED

PHONE CONNECTION

(orange dot) at the back
of the telephone base.

•

DSL filter (not
included) is
required if you have
DSL high-speed
Internet service.

Plug one end
of the curly
handset cord
into the jack
of the corded
phone interface
cable.

•

Plug the
headset
base power
adapter into
an electrical
outlet not
controlled by a
wall switch.

•

Corded phone

Plug other end of
the corded phone
interface cable
into the HANDSET
jack of your corded
phone.

•

Corded phone
interface cable

Headset base installation

For calls using your computer

You can use your DECT cordless headset for VoIP (Voice over IP)
calls through your computer. You can use any software program
that supports VoIP (such as Skype or Google Talk) to make and
answer calls.

Connect your headset to your computer

Connect the headset base to your computer using the USB cable
as shown below. Wait for your operating system to indicate that
it has recognized the headset (a sound or a pop-up window).

Getting started

Plug the large end of the
USB cable into the USB port
of your computer.

•Plug the small end of the USB
cable into at the right side
of the headset base.

•

7

Corded handset connection switch

If you are not using a corded telephone,
set the switch to NO.

-OR-

If you are using a corded telephone, you
must set the switch to YES.

To change the setting:

When the headset is not in use, slide the
CORDED HANDSET CONNECTED switch on
the headset base to YES or NO.

•

•

Getting started

Headset base settings

8

Battery installation

The battery is permanently attached to the battery compartment
cover (known as the battery pack). Do not try to separate them
from each other. After installing the battery pack, charge it for
at least 15 minutes. You may be able to make and receive short
calls. For optimal performance, charge the headset battery for
at least three hours before use. When fully charged, the headset
battery provides approximately 12 hours of talk time or five days
of standby time. When the headset is not in use, recharge by
returning it to the headset base.

NOTES:

Remove the any headset attachment (earbud excluded) before battery
replacement.

To order a replacement battery pack (model BT191665), visit our website at

www.telephones.att.com or call 1 [phone]. In Canada,

dial

1 [phone].

•

•

1. Insert the battery pack into the
battery compartment.

2. Press down on the battery pack
until it clicks into place.

Getting started

9

Battery charging

After installing the battery, charge the headset by placing it in
the charging cradle as shown below. The headset light turns on
when the headset is charging.

IMPORTANT INFORMATION

Use only the supplied rechargeable battery or replacement
battery (model BT191665). To order, visit our website at

www.telephones.att.com or call 1 [phone].

In Canada, dial 1 [phone].

1. Insert the headset into the
charging cradle.

2. The magnet in the
charging cradle holds
the top of the headset in
place. The

light turns on.

Getting started

10

Magnetic
charging mount

Add and register headsets

The TL7710 accommodates up to two cordless headsets. The
headset provided with your TL7710 is already registered. You
can add a new headset (TL7700, purchased separately) to the
headset base at any time. You must register a new headset
with the headset base before use (see page 13).

-OR-

You can register a maximum of two TL7710 headsets to an
AT&T DECT 6.0 telephone. The telephone base recognizes and
counts a headset the same as a handset. When you register
the TL7710 to an AT&T DECT 6.0 telephone, the headset base
acts only as a charger for the headset. You can place the
headset base anywhere you have an available power outlet. Do
not plug in the telephone line cord; you only need to plug the
headset base into a power outlet (see page 13).

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
for a list of compatible cordless telephones.

You can only register the headset to one product at a time. You
must deregister the headset before registering it to a headset
base or a telephone (see pages 15-16).

•

•

Getting started

11

Getting started

Add and register headsets

For SynapseTM users

Refer to the “Synapse Installation Guide” for installation,
registration, and deregistration, and the “Synapse User’s Guide”
for how to use the headset with the Synapse system. These
manuals are available for free viewing and download at

http://www.telephones.att.com/SynapseGuides.

For SynJTM users

Refer to the user’s manual that came with your SynJ telephone
for instructions on cordless headset registration, deregistration,
and use.

12

Add and register headsets

To register a headset to the headset base

Make sure the battery is properly installed in
the headset (see page 9). The light flashes
slowly and alternately in red and blue to
indicate the headset is not registered.

Place the headset in the headset base and
allow it to charge for at least one hour before
beginning registration.

Remove the headset from the headset base.
Press and hold the PAIR button until the
MUTE light on the headset base turns on
(about four seconds) and then release the
button.

Return the headset to the headset base
for registration.

It takes about 60 seconds to complete the
registration. The light turns blue when it
is registered.

To verify the registration, press the button
on the headset and check for a dial tone. If
the registration fails, you hear the voice prompt
"Not registered" and the light on the headset
flashes slowly and alternately in red and blue.

To reset the headset, remove the headset from the
headset base and try the registration
process again.

NOTE: You cannot register a headset if any other system headset is in use.

1.

2.

3.

4.

Getting started

13

Getting started

To register a headset to an AT&T DECT cordless telephone base

You must deregister the headset from its
headset base (see page 15).

Make sure the battery is properly installed in
the headset (see page 9). The light on the
headset flashes slowly and alternately
in blue and red to indicate the headset is
not registered.

Place the headset in the headset base and
allow it to charge for at least one hour
before beginning registration.

Remove the headset from the headset base
and then place it back to its base.

On the telephone base of the cordless phone,
press and hold /HANDSET LOCATOR until
the red IN USE light comes on (about four
seconds) and then release the button.

The headset is registered to the telephone
base automatically.

It takes about 60 seconds to complete the
registration. The light turns blue when it is
registered.

To verify the registration, press the button
on the headset and check for a dial tone. If the registration fails,
you hear the voice prompt "Not registered" and the light on
the headset flashes slowly and alternately in red and blue.

To reset the headset, remove the headset from the headset base
and try the registration process again.

1.

2.

3.

4.

5.

6.

Add and register headsets

14

Replace a headset

You may need to deregister your headsets if:

You wish to register your headset to an AT&T DECT telephone or
a different headset base.

-OR-

You have two registered headsets and need to replace one of them.
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 on this page
before beginning the deregistration process.

To deregister all headsets from the headset base

Press and hold the PAIR button on the 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.
Immediately press and release the PAIR button again. You

must press the PAIR button 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.)

It takes about 10 seconds to complete the deregistration.
The

light flashes slowly and alternately red and blue when

it is not registered.

3. To register the headset(s) to the headset base again, follow the
registration instructions on page 13.

NOTES:

If the deregistration process fails, you may need to reset the system and try
again. Remove the headset from the headset base and press

. Place the

headset back into the headset base. You may also reset by unplugging the
power from the headset base, then wait a few seconds, and then plug it
back in.

You cannot deregister the headset(s) if another system headset is in use.

Even if the battery is depleted, you can still deregister the headset by following
the steps above.

1.

2.

•

•

•

Getting started

15

Replace a headset

To deregister the headset(s) from an AT&T DECT cordless
telephone base

Press and hold /HANDSET LOCATOR on the telephone base
for about 10 seconds until the IN USE light starts to flash, then
release the button.
Immediately press /HANDSET LOCATOR again. You must
press /HANDSET LOCATOR while the IN USE light is still
flashing. (The light flashes for about five seconds. If the light
stops flashing, the deregistration fails. You can pick up the
headset and place it back into the headset base, then start
again with step one above.)

It takes about 10 seconds to complete the deregistration.
The light flashes slowly and alternately blue and red when it
is not registered.

3. To register the headset(s) to the telephone base again, follow
the registration instructions on page 14.

NOTES:

If the deregistration process fails, you may need to reset the system and try
again. Remove the headset from the headset base and press

. Place the
headset back into the headset base. You may also reset by unplugging the
power from the headset base, then wait a few seconds, and then plug it
back in.

You cannot deregister the headset(s) if any system handset/headset is in use.

Even if the battery is depleted, you can still deregister the headset by
following the steps above.

1.

2.

•

•

•

Getting started

16

Headset attachments

Earbud

There are three sizes of earbuds provided. The medium-sized
earbud is already attached with the headset.

Getting started

17

To remove the earbud from the headset earpiece:

Hold on both sides of the earbud. Twist and pull the earbud until it
separates from the earpiece.

To attach the earbud to the headset earpiece:

Choose an appropriate earbud.
Position the earbud on the earpiece as shown below.
Press the earbud down on the earpiece until it clicks into

place. Move the earbud around so that the protruding bump on
the earbud is pointing towards your mouth when placed
on your ear.

1.

2.

3.

To wear on the left ear:•

To wear on the right ear:•

Figure 1

Figure 2

Headset attachments

Getting started

18

Over-the-ear hook

To adjust the headset to wear on the left or right ear:

Make sure the ear
hook ring is positioned
as shown in Figure 1
before installation.

Attach the ear hook
ring. See the next page
for instructions.

1.

2.

Make sure the ear
hook ring is positioned
as shown in Figure 2
before installation.

Attach the ear hook
ring. See the next page
for instructions.

1.

2.

Headset attachments

Getting started

To attach the ear hook to the headset:

Remove any headset attachment (earbud excluded) connected
to the headset earpiece.

Insert the earpiece into the ear hook ring as shown in Figure 1.
Press the edge of the ear hook ring towards the earpiece until

it clicks into place 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.

1.

2.

3.

Figure 1 Figure 2

Figure 3

19

Headset attachments

To remove the ear hook from the headset:

Hold the headset with one hand. Twist and pull the ear hook with
the other hand until it separates from the earpiece.

Getting started

20

Headset attachments

Over-the-head band

To attach the head band to the headset:

Remove any headset attachment (earbud excluded) currently
connected to the headset.

Insert the earpiece into the head band ring as shown in Figure 1.
Push the earpiece towards the head band ring until it clicks

into place as shown in Figure 2.
Adjust the head band to fit your head. Adjust and rotate the

angle of the headset until the microphone is pointing towards
your mouth as shown in Figure 3.

1.

2.

3.

4.

NOTES:

To wear on the other ear, rotate the headset within the head band ring.

Firmly grip the padded head band ring with one hand whenever adjusting the
headset microphone up or down (see Figure 3).

•

•

Figure 3

Getting started

Figure 1

Figure 2

21

Headset attachments

To remove the head band from the headset:

Hold the headset with one hand and the head band ring with the
other hand. Twist and pull the headset until it separates from the
head band ring.

Getting started

22

To attach the neck band to the headset:

Remove any headset attachment (earbud excluded) currently
connected to the headset.

Insert the earpiece into the neck band ring as shown in Figure 1.
Push the earpiece towards the neck band ring until it clicks

into place as shown in Figure 2.

4. Place the neck band around your neck with the padded neck
band rings over your ears.

5. Adjust and rotate the angle of the headset until the microphone
is pointing towards your mouth as shown in Figure 3.

NOTE: To wear on the other ear, remove the headset from the neck band
(see the next page) and then attach it to the other side of the neck band
by following the steps above.

1.

2.

3.

Headset attachments

Behind-the-neck band

Figure 1 Figure 2

Figure 3

Getting started

23

To remove the neck band from the headset:

Hold the headset with one hand and the neck band ring with the
other hand. Twist and pull the headset until it separates from the
neck band ring.

Headset attachments

Getting started

24

Headset operation

Power on/off the headset

Power on the headset before use.

To power on the headset:

Place the headset in the headset base.

-OR-

Press and hold for two seconds.

The light flashes in blue when the headset is being
powered on.

Power off the headset if it will not be used for a long time.

To power off the headset:

Press and hold for two seconds.

The light flashes in red when the headset is being powered off.

Phone mode and PC mode

Before using the headset, you can change the default mode
for your headset. To choose phone mode, press PHONE on the
headset base. To choose PC mode, press PC on the
headset base.

•

•

•

Operation

25

Operation

26

Phone mode

Make a call

In order to make and receive calls on your home or office
telephone line, make sure the PHONE light on the headset base
is on. Press the PHONE button to turn it on.

When the headset base is connected to a telephone wall jack:

Follow the instructions in your telephone user’s manual for
making calls.

Press on the headset at any time to join the call.
After you join the call on the headset, you can hang up the

telephone and continue the call on the headset.

When the headset base is connected to a corded telephone
and its corded headset:

Lift the corded handset from the telephone base.
Follow the instructions in your telephone user’s manual for

making calls.
Press on the headset at any time to join the call.
After you join the call on the headset, you can hang up the

telephone and continue the call on the headset.

NOTE: If you plug the headset into a telephone line without a telephone
connected to the line, you will not be able to make calls.

1.

2.

3.

1.

2.

3.

4.

Phone mode

Answer a call
When the headset base is connected to a telephone wall jack:

Press on the headset.

When the headset base is connected to a corded telephone
and its corded headset:

Lift the corded handset from the telephone base.

Press on the headset at any time to switch to the headset.
The corded handset must be lifted up until you are ready to

end your call.

End a call
When the headset base is connected to a telephone wall jack:

Press on the headset or place the headset in the headset
base.

When the headset base is connected to a corded telephone
and its corded headset:

Press on the headset.
Hang up the corded handset by placing it back to the

telephone base.

•

1.

2.

3.

•

1.

2.

Operation

27

Phone mode

Operation

28

Headset ringer

The headset base and headset do not have an external ringer.
When you receive calls, the headset earpiece will play a ringer.
If you have telephones connected to the same telephone line
as the headset base, you can rely on the ringers of those
telephones to alert you to incoming calls.

To change the volume of the earpiece ringer:
Press VOL+ or VOL- when the headset is not in use.

To turn off the volume of the earpiece ringer:
Press VOL- until you hear two beeps from the headset.

Temporary ringer silencing
Press MUTE/

FLASH to temporarily silence the ringer in the

headset earpiece. This silences the ringer 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 headset earpieces ring when there is an incoming call. Pressing
MUTE/FLASH on one headset only silences the ringer of that headset.

Options while on calls

Volume control
To adjust the listening volume:

While on a call, press VOL+ or VOL- on the top
of the headset to adjust the listening volume.

If you are on a VoIP call, you can also adjust your
listening volume through your computer audio
settings and in some VoIP calling software.

To adjust the speaking volume:

While on a call, press MICROPHONE/ VOLUME
on the side of the headset base to adjust the
speaking volume.

If you are on a VoIP call, you can also adjust your microphone
volume through your computer audio settings and in some
VoIP calling software.

NOTES:

Listening volume settings are independent for each headset, but the speaking
volume is shared by all registered headsets.

When the volume reaches the minimum or maximum setting, you hear two
low beeps.

Call waiting

If you subscribe to call waiting service offered
by your telephone service provider, you hear a
call waiting alert tone if there is an incoming call
while you are already on a call.

Press and hold

MUTE/FLASH on the top of the

headset for two seconds to put your current call
on hold and answer the new call. Press and hold

MUTE/FLASH

for two seconds at any time to switch back and forth
between calls.

•

•

•

•

•

•

Operation

29

Options while on calls

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 a call:

• Press

MUTE/FLASH on the headset to turn off

the headset microphone. The voice prompt
"Mute On" plays. When mute is on, the MUTE
light on the headset base is on and a short
beep plays every 30 seconds.

To take a call off mute:

• Press

MUTE/FLASH on the headset again. The voice prompt

"Mute off" plays and then resume the two-way conversation.

Switch a call between the handset and headset

To switch from the corded handset to the headset while on a
call, press on the headset, then place the corded handset
back into the telephone base.

To switch from the headset to the corded handset while on
a call, lift the corded handset from the telephone base. The
call is automatically switched from the headset to the corded
handset.

To switch from the cordless handset to the headset while
on a call, press on the headset, then hang up the cordless
handset.

To switch from the headset to the cordless handset while on a
call, press the button you use to answer a call on the handset,
then press

on the headset.

•

•

•

•

Operation

30

Options while on calls

Multiple headsets/handsets use

Headset(s) and handset(s) on the same phone line can join an
external call in progress. The number of headset(s) and handset(s)
that can join may be limited by your telephone system. See your
telephone user’s manual for more information.

To join a call with a headset, press on the headset.

To end the call, press or place the headset in the headset base
and hang up all other handsets.

Operation

31

Intercom

If you have registered your headset to an AT&T DECT cordless
telephone, follow the instructions in your telephone user’s
manual for intercom call.

Answer an intercom call

Press on the headset to answer the intercom call.

Answer an incoming call during an intercom call

If you receive an incoming outside call during an intercom call,
you hear two low beeps.

Press on the headset to end the intercom

call. The headset rings after a two-second
pause. Press again to answer the
incoming call.

Press and hold MUTE/FLASH to answer the
incoming call and end the intercom call.

NOTE: You can only make an intercom call from an AT&T DECT telephone to
the DECT cordless headset.

End an intercom call

Press on the headset to end the intercom call.

•

•

Operation

32

PC mode

Operation

33

In order to make and receive calls through your computer,
connect the headset base to your computer using the USB cable
(see page 7).

Turn on PC mode

In idle mode, press the PC button on the headset
base to activate it for use with your computer. The

PC light turns on.

Configure your audio settings

Configure the audio settings in your VoIP software to use your
"AT&T DECT Headset". Make sure the volumes of the microphone
and speaker are turned on and set to an audible level through
your computer audio settings and in some VoIP calling software.

You may also need to configure the default audio settings
of your computer if you would like to use another device for
playback and recording at the same time as your headset. For
example, you can listen to music through your speakers while
you are having a phone conversation using your headset. For
detailed instructions on how to configure the audio settings for
various operating systems, refer to the Troubleshooting section
on pages 45-47.

Make or answer a call in PC mode

Use your VoIP software to make new calls or answer incoming
calls as you normally would. Your headset should transmit and
receive all audio to and from your VoIP program. Press

to use

your headset for calls in PC mode. While it receives an incoming
call, you hear two low beeps from the headset.

PC mode

Operation

34

Switch between PC mode and PHONE mode
You can switch back and forth between PHONE mode and

PC mode while on a call by pressing the corresponding mode

button on the headset base. The light on the headset base of
the selected mode flashes twice every three seconds.

While on a call:

You can press the PHONE button on the headset base in PC
mode. The PC call is put on hold.

You can press the PC button on the headset in PC mode. The
PHONE call is put on hold.

Press on the headset to end the call you are on and reconnect
to the call on hold.

NOTES:

If you are on a call in PC mode and the headset loses the connection to the
base, the mode will return to PHONE mode when the connection recovers.

There is a ring back tone on the headset when a call is put on hold for
14 minutes. At the 15 minutes, the call on hold will be automatically
disconnected.

•

•

•

•

PC mode

Operation

35

Conference PHONE and PC calls
You can join PHONE and PC calls into a conference call.

While on a call, you can:

• Create a conference while in

PHONE mode, press and hold the

PC button on the base until both the PC and PHONE buttons

flash together.

• Create a conference while in

PC mode, press and hold the

PHONE button on the base until both the PC and PHONE

buttons flash together.

• Press

to end the conference and hang up both calls.

• Press the PC button to put the PHONE call on hold and speak
to the person on the PC call.

•

Press the PHONE button to put the PC call on hold and speak
to the person on the PHONE call.

One short beep (headset key) tone.

One short beep
every 30 seconds

Muted headset microphone alert tone.

Two beeps Error alert tone.

The volume reaches its highest or lowest
setting.

Two low beeps Call waiting alert tone.

Two rapid beeps
every 20 seconds

Low battery warning.

Three rising beeps A conference call starts.

Three rapid beeps
every 10 seconds

Out of range while the headset is on a call.
A headset not yet registered with a

charged battery.

Ringer tone Incoming call alert tone.

Ring back tone.

Alert tones and lights

Headset alert tones

Appendix

36

light status

Red On when headset is charging in the headset base.

Flashes every 10 seconds to indicate the battery
is low.

Flashes three times when the headset is being
powered off.

Flashes quickly when the headset needs to be
reset. Remove the battery for one minute then
install the battery again.

•

•

•

•

Blue On when a fully charged registered headset is

in the headset base.
Flashes three times to indicate the power will

be on.
Flashes twice every three seconds when the

fully charged headset is in use.
Flashes four times every three seconds when

there is an incoming call in PHONE mode.
Flashes every 10 seconds when a fully charged

registered headset in idle mode is out of the
headset base.

•

•

•

•

•

Red and
blue
alternately

Flashes slowly when the headset is not registered.
Flashes quickly when the headset is trying to

register to a headset base or telephone base.

•

•

Off The battery is dead.

No battery is installed.
The headset is turned off.

•

•

•

Alert tones and lights

Appendix

Headset lights

37

Headset base light status

MUTE
(Red)

On when headset microphone is muted.
On when you are registering a headset.
Flashes when you are deregistering headset(s)

from the headset base.

•

•

•

PHONE
(Blue)

On when PHONE mode is selected (default mode)
on the idle headset base.

Flashes four times every three seconds when there
is an incoming call.

Flashes twice every three seconds when the
headset is in use in PHONE mode, or when there is
a conference call in both PHONE and PC modes.

Flashes when a call is on hold in PHONE mode.

•

•

•

•

PC
(Blue)

On when PC mode is selected on the idle
headset base.

Flashes twice every three seconds when the
headset is in use in PC mode, or when there is a
conference call in both PC and PHONE modes.

Flashes slowly when a call is on hold in PC mode.

•

•

•

Alert tones and lights

Headset base lights

Appendix

38

Troubleshooting

If you have difficulty with your telephone, 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 [phone].

My headset doesn’t work at all.

• Make sure the power cord is securely plugged in.

• Make sure that the battery is securely installed in the
cordless headset.

• Make sure the telephone line cord is securely and firmly
plugged into the headset base and the telephone wall jack.

• Charge the battery in the cordless headset for at least three
hours. For optimum daily performance, return the cordless
headset to its base when not in use.

• Reset the headset. Power off the headset. Press and hold for

two seconds, then press and hold for two seconds or place it
in the headset base power it on. Allow up to one minute for the

cordless headset and headset base to reset.

• Reset the headset base. 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 to reset.

Other electronic products such as HAM radios and other DECT
phones can cause interference with your cordless headset. Try
installing your headset base as far away as possible from these
types of electronic devices.

• You may need to purchase a new battery. Refer to

page 9 of

this user’s manual.

The other party cannot hear my voice during a call.

Adjust the speaking volume during a call (page 29).

•

•

Appendix

39

I cannot get a dial tone.

• First, try all the suggestions above.

• Move the cordless headset closer to the headset base. You
might have moved out of range.

Make sure that the CORDED HANDSET CONNECTED switch is
set properly (page 8).

• Your telephone line cord may be defective. Try installing a new
telephone line cord.

Another phone on the same phone line may be in use.

• If the previous suggestions do not work, disconnect the
headset base from the telephone jack and connect another
phone to that jack. If there is no dial tone on that phone
either, the problem is in your wiring or local service. Contact
your telephone service provider.

The battery does not charge.

•

Make sure that the battery is securely installed in the
cordless headset.

• If the cordless headset is in its headset base but the light
on the headset does not turn on, refer to The light on the
headset is off while charging in this Troubleshooting guide.

• Charge the battery in the cordless headset for at least three
hours. For optimum daily performance, return the cordless
headset to the headset base when not in use.

• You may need a new battery. Refer to the Battery charging
section on page 9.

• Your headset might be defective. Refer to the
Limited warranty section on pages 60-63 for further
instructions.

•

•

Appendix

Troubleshooting

40

I cannot dial out.

• First try all the suggestions above.

•

You must use a telephone on the same line to dial out. Once
you have dialed the number, you can press to join the call.
After you join the call, you can hang up the telephone from
which you dialed from.

• If the other phones in your home or office are having the same
problem, the problem is in your wiring or local service. Contact
your telephone service provider (charges may apply).

My cordless headset isn’t performing normally.

• Make sure the power cord is securely plugged into the headset
base. Plug the unit into a different, working electrical outlet
not controlled by a wall switch.

• Move the cordless headset closer to the headset base. You
might have moved out of range.

• Reset the headset. Press and hold

for two seconds, then

press and hold for two seconds or place it in the headset

base power it on. Allow up to one minute for the cordless

headset and headset base to reset.

• Reset the headset base. 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 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.

Appendix

Troubleshooting

41

I get noise, static, or weak signal even when I’m near the
headset base.

•

If you subscribe to high-speed Internet service (DSL - digital
subscriber line) through your telephone line, 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. 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 as far as possible
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 base to a higher location. You may
experience better reception by elevating the headset base.

• If other phones in your home or office are having the same
problem, the problem is in your wiring or local service. Contact
your telephone service provider (charges may apply).

Appendix

Troubleshooting

42

I cannot hear a ring tone from the headset when there is an
incoming call.

•

The headset does not have an external ringer. The ring tone
can only be heard through the earpiece.

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 base to another
location, preferably to a higher connection.

• If other phones in your home or office are having the same
problem, the problem is in your wiring or local service. Contact
your telephone service provider (charges may apply).

• Test a working phone at the phone jack. If another phone has
the same problem, there may be a problem with 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 base as far away as possible from these
types of electronic devices.

•

Install the battery again, and then place the cordless headset
in the headset base. Wait for the cordless headset to
reestablish its connection with the headset base. Allow up to
one minute for this to take place.

• Your telephone line cord

may be defective. Try installing a new

telephone line cord.

•

Appendix

Troubleshooting

43

Appendix

Troubleshooting

I hear other calls while using my headset.

• Plug a different telephone into the telephone jack that you
are currently using. 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 any audio using my headset in PC mode.

• Make sure the two ends of the USB cable are securely plugged
into the computer and headset base USB ports.

• Make sure

PC mode is selected and the PC light is on.

• Make sure you have pressed

on your headset to receive the

audio from your computer.

• Make sure you are using a software program that supports
VoIP calling (such as Skype or Google Talk).

• Make sure the headset listening volume is turned on and set to
an audible level through your computer audio settings and in
some VoIP calling software.

Make sure your VoIP calling software audio settings are set to
use your "AT&T DECT Headset".

The person on the other end cannot hear me.

• Make sure the two ends of the USB cable are securely plugged
into the computer and headset base USB ports.

• Make sure

PC mode is selected and the PC light is on.

• Make sure you have pressed

on your headset to receive the

audio from your computer.

• Make sure you are using a software program that supports
VoIP calling (such as Skype or Google Talk).

•

44

Appendix

Troubleshooting

• Make sure the headset microphone volume is turned on and
set to an audible level through your computer audio settings
and in some VoIP calling software.

• Make sure your VoIP calling software audio settings are set to
use your "AT&T DECT Headset".

I used my headset for calls through the computer and now I
cannot hear audio through my speakers.

• Your computer's default playback device is set to use your
"AT&T DECT Headset". Follow the steps below to configure
your operating system's default audio settings.

For Windows XP:

Go to the “Start” menu and choose “Control Panel”.
If you are not already in "Classic View" mode, click on

“Switch to Classic View”. In "Classic View" mode, click on
“Sounds and Audio Devices”.

Click on the “Audio” tab and select your speakers as the
default device under “Sound playback”.

Click on the “Volume” button and adjust the volume slider
as necessary. Make sure the “Mute” box is unchecked.

Select your microphone as the default device under “Sound
recording”.

Click on the “Volume” button and adjust the volume slider
as necessary.

For Windows Vista:

Go to the “Start” menu and choose “Control Panel”.
If you are not already in "Classic View" mode, click on

“Switch to Classic View”. In "Classic View", click on “Sounds”.
Click on the “Playback” tab and select your speakers.

1.

2.

3.

4.

5.

6.

1.

2.

3.

45

Appendix

Troubleshooting

46

Click on the “Properties” button to open the “Speakers
Properties” window. Click on the “Levels” tab and adjust the
volume slider as necessary. Make sure the speakers are
not muted.

Click on the “Recording” tab and then select your
microphone.

Click on the “Properties” button to open the “Mic
Properties” window. Then click on the “Levels” tab and
adjust the volume slider as necessary. Make sure the
microphone is not muted.

For Windows 7:

Go to the “Start” menu and choose “Control Panel”, and
then click on “Hardware and Sound”.

Click on the “Playback” tab and select your speakers.
Click on the “Properties” button to open the “Speakers

Properties” window. Click on the “Levels” tab and adjust the
volume slider as necessary. Make sure the speakers are not
muted.

Click on the “Recording” tab and then select your
microphone.

Click on the “Properties” button to open the “Mic
Properties” window. Then click on the “Levels” tab and
adjust the volume slider as necessary. Make sure the
microphone is not muted.

For Mac OSX:

Go to the “Apple Menu” and choose “System Preferences”,
and then click on “Sound”.

Click on the “Output” tab and select your speakers as
the “Sound Output” device, and then adjust the “Output
volume” slider to the desired level. Make sure the “Mute”
box is unchecked.

4.

5.

6.

1.

2.

3.

4.

5.

1.

2.

Appendix

Troubleshooting

Click on the “Input” tab and select your microphone as the
“Sound Input” device, and then adjust the “Input volume”
slider to the desired level.

• If you still cannot hear audio through your speakers, adjust the
audio settings of the software program you are using. Refer to
the help documentation of your software program for detailed
instructions.

I want to use my headset with a different headset base.

• You need to deregister the headset from the current headset
base (page 15), and then register it to the new headset base
(page 13).

I cannot answer an incoming call in PC mode.

• Your headset cannot directly answer a call. You must answer
all incoming calls on your computer through your VoIP
program.

• Make sure PC mode is selected on the headset base and the
PC light is on.

• Make sure you have pressed

on your headset to receive the

audio from your computer.

• Make sure the headset listening volume is turned on and set to
an audible level through your computer audio settings and in
some VoIP calling software.

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 telephone.
Try installing your headset base as far away as possible from
these types of electronic devices.

3.

47

• 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 base to a higher location. The headset
will have better reception when not installed in a low area.

• If other phones in your home or office are having the same
problem, the problem is in your wiring or local service. Contact
your telephone service provider (charges may apply).

The 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 is securely installed in the cordless
headset.

Make sure the headset is sitting properly in the base to charge.

• 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 to reset.

Clean the cordless headset and headset base charging
contacts each month using a pencil eraser or cloth.

• Your headset or headset base might be defective. Refer to
the Limited warranty section on pages 60-63 for further
instructions.

•

•

•

Appendix

Troubleshooting

48

Appendix

Troubleshooting

49

Common cure for electronic equipment.

If the unit does not seem to be responding normally, try putting
the cordless headset in its base. If it does not respond, do the
following (in the order listed):

• Disconnect the power to the headset base.

• Remove the cordless headset battery.

• Wait a few minutes.

• Connect power to the headset base.

• Install the battery again, and then place the cordless headset
into the headset base.

• Wait for the cordless headset to reestablish its connection with
the headset base. Allow up to one minute for this to
take place.

Appendix

Important safety information

50

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. If you

suspect a gas leak, report it immediately, but use a headset
away from the area where gas is leaking. If this product is a
cordless model, make sure the headset base is also away from
the area.

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.

If this product does not operate normally, see the
Troubleshooting section on pages 39-49 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 60-63. 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
voltage or other risks.

•

•

•

•

•

•

Appendix

Important safety information

51

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, an
under-the-table or a cabinet outlet.

Caution: Use only the power adapter provided with this product. To
obtain a replacement, visit our website at

www.telephones.att.com or call 1 [phone].

In Canada, dial

1 [phone].

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.

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.

•

•

•

•

•

Important safety information

Appendix

52

Rechargeable batteries: This product contains 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 lithium­ion 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

There may be a risk of explosion if you use a wrong type
of battery. Use only the supplied rechargeable battery or
replacement battery (model BT191665).

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.

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.

•

•

•

•

•

•

•

Appendix

Important safety information

53

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 headset. 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

•

•

•

•

•

•

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 CORD FROM THE WALL. Then pull the unit out by the unplugged cords.

Appendix

54

Appendix

55

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 telephone service provider 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
the 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 telephone service provider.

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 service
provider 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.

Appendix

56

FCC Part 68 and ACTA

If this equipment is causing harm to the telephone network, the
telephone service provider may temporarily discontinue your
telephone service. The telephone service provider 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
service provider is required to inform you of your right to file a
complaint with the FCC. Your telephone service provider may
make changes in its facilities, equipment, operation, or procedures
that could affect the proper functioning of this product. The
telephone service provider 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.

Appendix

57

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.

Appendix

58

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.

Appendix

59

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.

Appendix

60

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 [phone].

In Canada, call 1 [phone].

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.

Appendix

61

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 one­year 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

•

•

•

•

•

•

Appendix

62

Limited warranty

PRODUCT returned without a valid proof of purchase (see
item 6 below); -or-

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 [phone].

In Canada, call 1 [phone]. NOTE: Before calling
for service, please review the user’s manual; a check of the
PRODUCT's 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:

Return the entire original package and contents including the
PRODUCT to the service location along with a description of
the malfunction or difficulty; and

•

•

a.

Appendix

63

Limited warranty

Include a “valid proof of purchase” (sales receipt) identifying
the PRODUCT purchased (PRODUCT model) and the date of
purchase or receipt; and
Provide your name, complete and correct mailing address,
and telephone number.

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.

Please retain your original sales receipt as proof of purchase.

b.

c.

DECT 6.0 digital technology

This technology digitally transmits your voice across multiple channels using
the newly available DECT 6.0 frequency band. This technology provides
superior quality of voice and sound, high protection against wiretapping,
and a better range than the 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

This cordless headset provides enhanced clarity and sound quality. It
also delivers extended range.

RF frequency band

1921.536MHz - 1928.448MHz

Channels 5

Operating temperature 32°F - 122°F

0°C - 50°C

Headset base voltage
(AC voltage, 60Hz)

96Vrms - 127Vrms

Headset base voltage
(AC adapter output)

6VDC @300mA
7VDC @300mA

Headset voltage 3.2VDC - 4.2VDC

Charger voltage
(AC adapter output)

6VDC @400mA

Replacement battery 3.7V 240mAH

Technical specifications

Appendix

64

Operation Operating time*

Talk time Up to 12 hours

Standby Up to five days

* Operating times vary depending on your actual use and the age of the battery.

Index

A

AC adapter 5–6, 64
Alert tone 36
Answer

a call (in PC mode) 33
a call (in PHONE mode) 27
intercom call 32

B

Battery charging 10
Battery installation 9
Behind-the-neck band 23–24

C

Call waiting 29
Charging cradle 2
Corded handset connected 3
Corded phone connection 3

D

Deregistration 15–16
DSL 4–6, 42

E

Earbud 17
Ear hook 18–20
End

a call 27
an intercom call 32

F

Flash 29

H

Headset

alert tones 36
attachments 17–24
lights 37–38
operation 25–35
registration 11–14
ringer 28

I

Incoming call

answer (in PC mode) 33
answer (in PHONE mode) 27

Intercom call

answer 32
end 32

L

Lights

headset 37

headset base 38
Limited warranty 60–63
Listening volume 29

M

Maintenance 54
Make a call (in PC mode) 33
Make a call (in PHONE

mode) 26

Multiple headsets/

handsets use 31

Mute 30

65

Index

Index

Index

N

Neck band 23–24

O

Operating range 64
Over-the-ear hook 18–20
Over-the-head band 21–22

P

PC mode 33–35
Power off 25
Power on 25

Q

Quick reference guide

headset 1
headset base 2–3

R

Replace a headset 15–16
Ringer 28

S

Safety information 50–53
Speaking volume 29

T

Technical specifications 64
Temporary ringer silencing 28
Troubleshooting 39–49

U

USB port 3, 7

V

VoIP (Voice over IP) 7, 33
Volume control

listening volume 28–29
ringer 28
speaking volume 29

66

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© 2010 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.

Printed in China. Issue 1 AT&T 07/10