VTech Telecommunications 80-8523-01 1.9GHz DECT Cordless Phone with Headset User Manual
VTech Telecommunications Ltd 1.9GHz DECT Cordless Phone with Headset
User Manual
User’s manual
TL7912
DECT 6.0 cordless headset
and handset lifter
Congratulations
on your purchase of this AT&T product. Before using this AT&T
product, please read the Important safety information section
on pages 51-54 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 (800) 222-3111. In Canada, dial 1 (866) 288-4268.
Model number: TL7912 (Headset, headset base and handset lifter)
Type: DECT 6.0 cordless headset and handset lifter
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 and lifter.
Save your sales receipt and original packaging in case it is
necessary to return this product for warranty service.
© 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. Printed in China.
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.
Cordless headset
with medium-sized
earbud attached
Battery pack
(battery with battery
compartment cover
attached)
User's manual
User’s manual
TL7912
DECT 6.0 cordless headset
and handset lifter
Quick start guide
Quick start guide
TL7912
DECT 6.0 cordless headset
and handset lifter
2 earbuds
Behind-the-neck bandOver-the-head band
Line splitter
2 over-the-ear hooks
Parts checklist (continued)
Auxiliary ring
detector
Telephone line cord Large lifter padlifter pad padHandset lifterlifter
Headset base
Anti-slip pad
USB cable
Headset base
power adapter
Corded phone
connection cable
Optional accessory
In this manual, there are references to TL7900. The TL7900
includes an expansion headset and a headset charger (up to two
headsets can be used with the same headset base).
TL7900 can be purchased separately. For more information about
the product, visit our website at www.telephones.att.com.
User’s manual
TL7912
DECT 6.0 cordless headset
and handset lifter
1
light status
Red On when the headset is charging in the
headset base.
Flashes every 10 seconds to indicate the battery is
low when the headset is not in the headset base.
Flashes three times to indicate the headset is
powering off.
•
•
•
Blue On when a fully charged and registered headset is
in the headset base.
Flashes three times to indicate the headset is
powering on.
Flashes twice every three seconds when the headset
is in use.
Flashes four times every four seconds when there is
an incoming call in PHONE mode.
Flashes every 10 seconds when a fully charged
and registered headset in idle mode is out of the
headset base.
•
•
•
•
•
Red and blue 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 powered off.
•
•
•
Quick reference guide - headset
Headset lights
(On/off button and light)
Press to make, answer or end a call
(pages 31 and 32).
Getting started
2
Getting started
VOL+/VOL-
Push the volume switch
on the headset to the
right or left to adjust the
headset ringer volume
while in idle mode
(page 32) or the
listening volume while
on a call (page 35).
Earpiece
Microphone
The microphone
incorporates
noise canceling
technology for
clearer calls.
MUTE/FLASH
Press to mute the
microphone during a call
(page 36).
Press and hold for two
seconds to answer an
incoming call when you
receive a call waiting alert
during a call (page 33).
Press to mute the ringer in
the earpiece when there is
an incoming call (page 33).
Quick reference guide - headset
Battery pack
Open to replace the
battery pack.
3
Getting started
One short beep Headset key tone.•
One short beep
every 30 seconds
Muted headset microphone alert tone.•
Two beeps Error alert tone.
The ringer volume is at its lowest setting.
The listening volume is at its highest or
lowest setting.
Any key is pressed while the headset is
out of range.
•
•
•
•
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 20 seconds
The headset is out of range.
The headset is not yet registered.
•
•
Ring tone Incoming call alert tone.
Ring back tone.
•
•
Three rapid beeps The headset is powering on or off.•
Quick reference guide - headset
Headset alert tones
4
Getting started
Quick reference guide - headset base
Magnetic charging mount
Place the headset here
for charging.
MUTE (light)
PAIR
Use to initiate headset
registration or deregistration.
PHONE (mode
button and light) PC (mode button
and light)
MUTE
(Red)
On when you are registering a headset.
Flashes when the mute function is in use.
Flashes when you are deregistering headset(s) from the
headset base.
•
•
•
PHONE
(Blue)
On when PHONE mode (default mode) is selected on the
idle headset base.
Flashes four times every four 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 slowly when a call is on hold in PHONE mode.
•
•
•
•
PC
(Blue)
On when PC mode (default 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.
•
•
•
Headset base lights
5
Getting started
VOLUME /MICROPHONE
Press the volume keys on the side
of the headset base to adjust the
speaking volume when on a call
(page 35).
CORDED HANDSET CONNECTED/
YES/NO
Choose the setting based on whether
you are using a corded handset
(page 13).
LIFTER
This jack is only used with the
handset lifter.
(USB port)
Open the port cover to plug in the USB
cable when in PC mode (page 23).
Quick reference guide - headset base
6
Getting started
Quick reference guide - headset base
TEL WALL JACK (red dot)
POWER jack (green dot)
CORDED PHONE CONNECTION
This jack (blue dot) is only used with
the corded phone connection cable
(page 14).
Corded handset audio adjust switch
This switch is only used when you have
connected the headset base to a corded
telephone (page 15).
7
Getting started
Switch hook presser
When the CORDED HANDSET CONNECTED
switch is set to YES, pressing on the
headset raises or lowers the switch
hook presser.
Lifter control cable
This cable is hard wired into the lifter
and plugs into the LIFTER jack on the
headset base.
RING DETECT jack
Plug in the auxiliary ring
detector (page 20).
ADJUST LIFTER knob
Adjusts the height of the lifter arm (page 17).
Lifter arm
Holds the corded telephone handset.
Quick reference guide - handset lifter
SENSOR ADJ knob
Adjusts the sensitivity of the ring detector (page 21).
8
Getting started
Small lifter pad
Holds the earpiece of the corded telephone
handset.
Adhesive tape
Remove the protective strips before
attaching the lifter to the telephone base.
STATUS light
On in red when the ring detector is off (page 9).
On in blue when the ring detector is on and
the headset not in use (page 9).
Flashes in blue four times every three seconds
when the ring detector detects an incoming
call (page 9).
Flashes in blue slowly when the switch hook
presser is raised and you are on a call
(page 9).
Quick reference guide - handset lifter
Internal ring detector
Detects the telephone ringer and sends a
ring tone to the headset earpiece.
RING ON/OFF
Press to turn the ring detector on or off. When the ring detector is
off, the cordless headset does not ring (page 21).
Switch hook presser adjustment knob
Adjusts the position of the switch hook presser
(page 17).
9
Getting started
STATUS light
Quick reference guide - handset lifter
Red On when the headset is not in use and the ring detector
is turned off.
Flashes slowly when the headset is in use and the ring
detector is turned off.
•
•
Blue On when the headset is not in use and the ring
detector is turned on.
Flashes four times every three seconds when the
ring detector detects an incoming call.
Flashes slowly when the headset is in use and the
ring detector is turned on.
•
•
•
Off The headset base does not have power.
The lifter control cable is not plugged into the LIFTER
jack on the headset base.
•
•
10
Getting started
Installation
See pages 11-12
for easy instructions.
You must install and
charge the battery before
using the headset. STOP!
Colored labels
The cords have colored labels that guide you to plug them into
the correct headset base jacks. The back of the headset base
has color-coded dots and the names of the jacks above them
that correspond to the colored labels on the cords.
Digital subscriber line (DSL)
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 14 and 22). 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 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 a washing
machine or work bench.
11
Getting started
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 5 days
of standby time. When the headset is not in use, recharge by
returning it to the headset base.
NOTES:
Remove 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 (800) 222-3111. In Canada,
dial 1 (866) 288-4268.
•
•
1. Insert the battery pack into the
battery compartment.
2. Press down on the battery pack
until it clicks into place.
12
Getting started
Battery charging and connecting base power
After installing the battery, charge the headset by placing it in
the magnetic charging mount as shown below. The light turns
on when the headset is charging.
IMPORTANT INFORMATION
Use only the supplied rechargeable battery pack or replacement
battery pack (model BT191665). To order, visit our website at
www.telephones.att.com or call 1 (800) 222-3111.
In Canada, dial 1 (866) 288-4268.
Magnetic
charging mount
Insert the headset into the
magnetic charging mount.
1. The magnet holds the top of
the headset in place.
The light turns on.
2.
Plug the small end of the headset base power adapter into
the POWER jack (green dot) at the back of the headset base.
Plug the headset base power adapter into an electrical outlet
not controlled by a wall switch.
3.
13
Getting started
Headset base and handset lifter installation
Installation options
You have three installation options:
Option 1: Connect the handset lifter to a corded phone (see
pages 14-21). This option enables you to answer calls
even if you are away from the telephone base.
Option 2:
Connect the headset to a telephone wall jack (see
page 22). This option enables you to use the headset
with a single telephone line with or without a telephone.
Option 3: Connect the headset to your computer (see page 23).
This option enables you to use the headset for VoIP
(Voice over IP) calls through your computer.
Corded handset connection switch
If you connect your headset to a corded handset (page 14), set
the CORDED HANDSET CONNECTED switch to YES.
If you connect your headset to a telephone wall jack (page 22),
set the CORDED HANDSET CONNECTED switch to NO.
•
•
14
Getting started
Headset base and handset lifter installation
Option 1: Connect the handset lifter to a corded phone
The handset lifter (lifter) works with the cordless headset to
provide a complete communication solution for most corded
telephones. The lifter raises and lowers its switch hook presser to
answer, make and end phone calls. The ring detector provides an
incoming call indication through the cordless headset, so you can
answer calls even when you are away from the telephone base.
With this installation, you must set the CORDED HANDSET
CONNECTED switch to YES (see page 13). Adjust the corded
handset audio (see page 15) before you install the handset lifter
to the corded phone. See page 16 to attach the handset lifter.
Plug one end of the
corded phone connection
cable into the CORDED
PHONE CONNECTION
jack (blue dot) at the back
of the headset base.
•
Unplug the curly
handset cord from
the handset jack
on the corded
phone and plug
it into the jack on
the corded phone
connection cable.
•
Corded phone
Plug the other end
of the corded phone
connection cable into
the handset jack on
the corded phone.
•
A DSL filter (not
included) is required if
you have DSL high-speed
Internet service.
Plug the end of the
lifter control cable
into the LIFTER jack
at the back of the
headset base.
•
Use the
attached
fastener to
bundle all line
cords neatly.
•
15
Getting started
Headset base and handset lifter installation
Adjust the corded handset audio
1. Make sure that the CORDED HANDSET CONNECTED switch is
set to YES and PHONE mode is selected on the headset base.
2. Lift the corded handset to release the switch hook. Place the
corded handset beside the telephone base.
3. Place the headset earpiece on your ear.
4. Press on the headset to listen for a dial tone. The PHONE
mode light flashes twice every three seconds on the headset
base to indicate that the headset is in use. If there is no dial
tone or the dial tone is unclear, slide the corded handset audio
adjust switch at the bottom of the headset base from A to F
until the dial tone is clear.
16
Getting started
Attach the lifter
1. To choose where to install the lifter
on your telephone, look at the space
underneath the corded handset. If there
is a speaker, the lifter should be centered
over the speaker. If there is no speaker, the
lifter should be centered within the space.
Make sure the lifter arm is raised above
the switch hook of the telephone base.
2. Peel off the protective strips from the
adhesive tape at the bottom of the lifter.
3. Carefully place the lifter in the desired
position and press down.
4. Plug the lifter control cable into the
LIFTER jack on the headset base.
Headset base and handset lifter installation
Adhesive tape
17
Getting started
Headset base and handset lifter installation
Adjust the height of the lifter arm
Turn the ADJUST LIFTER knob to change the height of the lifter
arm. When in the raised position, the arm should release the
switch hook so you can hear a dial tone. When lowered, the arm
should hold the switch hook down so you cannot hear a dial tone.
Adjust the switch hook presser position
Turn the knob to move the switch hook presser until it is lined
up with your telephone switch hook.
18
Getting started
Headset base and handset lifter installation
Lifter adjustments and testing
1. Make sure that the CORDED HANDSET CONNECTED
switch on the headset base is set to YES.
2. Turn the switch hook presser adjustment
knob until the switch hook presser is just
above the switch hook (see page 17).
3. Lower the lifter arm until the switch hook
presser holds the switch hook down.
4. Place the corded handset on the lifter.
5. Press on the headset. The switch hook
presser should rise and release the switch
hook on your telephone base. Make
sure you hear a dial tone through your
headset earpiece.
6. If the switch hook is not fully released,
turn the ADJUST LIFTER knob (see
page 17) while the corded handset is
on the lifter. When the switch hook is
fully released, you will hear a dial tone from
the headset.
It may take some adjustments and testing to
find the right position for the lifter. For the
lifter to work properly, the switch hook must
release completely when you press and turn
the headset on. The switch hook must also be
held down completely when you press and
turn the headset off.
19
Getting started
Headset base and handset lifter installation
Installation of large lifter pad (optional)
If the small lifter pad cannot hold the corded handset steadily, you
can attach a large lifter pad (provided) to enlarge the contact area.
1. Hold the large lifter pad in front of the small lifter pad as
shown below.
2. Insert the large lifter pad into the two front gaps of the small
lifter pad.
Installation of anti-slip pad (optional)
The anti-slip pad (provided) helps prevent your corded handset
from slipping from the lifter.
1. Position the anti-slip pad above the small lifter pad.
2. Peel off the protective strip from the anti-slip pad.
3. Carefully return the anti-slip pad to the predetermined position
and replace the corded handset on the lifter.
Adhesive tape
Protective strip
20
Getting started
Install the auxiliary ring detector
1. Insert the auxiliary ring detector plug into the RING DETECT
jack on the lifter.
2. Remove the protective strip from the adhesive tape on the
auxiliary ring detector.
3. Stick the auxiliary ring detector to the center of the corded
phone speaker.
The internal or auxiliary ring detector detects the telephone
ringer and sends a ring tone to the headset earpiece.
If you installed the lifter over the top of the corded phone
speaker, the internal ring detector will recognize when the
phone rings. However, if your corded phone speaker is located
elsewhere on the phone, stick the auxiliary ring detector to the
speaker as shown below.
About internal and auxiliary ring detectors
Adhesive tape
Auxiliary ring
detector plug
Auxiliary ring detector Speaker
RING DETECT jack
RING DETECT jack
21
Getting started
About internal and auxiliary ring detectors
Adjust the sensitivity level
The default setting of the ring detector works with most corded
telephones. However, the ring detector might need some
adjustments to recognize less common telephone ring tones.
To adjust the ring detector sensitivity while the telephone
is ringing:
Turn the SENSOR ADJ knob clockwise
to increase the sensitivity.
Turn the SENSOR ADJ knob
counterclockwise to decrease
the sensitivity.
When the ring detector detects the
telephone ringer correctly:
The STATUS light on the lifter flashes quickly when the
telephone rings.
The detector sends the ring tone to the headset earpiece.
•
•
•
•
Ring detector on/off
When the ring detector detects an incoming call, it sends a ring
tone to the headset earpiece.
Press the RING ON/OFF button on the
lifter to turn the ring detector on or
off. The STATUS light is blue when the
ring detector is turned on. The STATUS
light is red when the ring detector is
turned off.
When the ring detector is turned off,
it does not send a ring tone to the
headset. The light on the headset
does not flash when there is an
incoming call.
NOTE: When you are using the speakerphone
of your telephone, the ring detector may send
a ring tone to the headset. If you do not want the headset to ring, press the
RING ON/OFF button to turn the ring detector off. After the call, you can
press the RING ON/OFF button again to turn the ring detector back on.
•
•
22
Getting started
Headset base installation
Option 2: Connect the headset to a telephone wall jack
You can use your DECT cordless headset for calls through your
telephone line with or without a telephone.
When you connect your headset base to the telephone wall jack
without a telephone, you are unable to make calls.
Use the included line splitter to connect the headset base and
your telephone to the same telephone wall jack.
NOTE: The headset base and headset do not have external ringers. When
you receive calls, the headset earpiece rings. 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 one end of the
telephone line cord into
the TEL WALL JACK
(red dot) at the back of
the headset base.
•
A 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.
•
Line splitter
Corded or
cordless phone
Plug the line splitter into
the telephone wall jack
(or a DSL filter if you
subscribe to DSL Internet
service).
•
Connect another
telephone line
cord between the
telephone and the
line splitter.
•
Use the attached
fastener to bundle
all line cords neatly.
•
23
Getting started
Headset base installation
Option 3: Connect the headset to 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 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).
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.
•
24
Getting started
Add and register headsets
The TL7912 supports up to two cordless headsets. The headset
provided with your TL7912 is already registered. You can add
a new headset (TL7900, purchased separately) to the headset
base. You must register a new headset with the headset base
before use (see page 26).
-OR-
You can register a maximum of two headsets (TL7900/TL7912)
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 TL7912 headset 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 27).
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 before you can register a headset.
Visit
www.telephones.att.com for a list of compatible telephones.
You can only register the headset to one product at a time. You
must deregister the headset before registering it to another
headset base or telephone (see pages 28 and 29).
•
•
25
Getting started
Add and register headsets
For SynapseTM users
Refer to the “Synapse Installation Guide” for instructions on
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 provided with your SynJ telephone for
instructions on cordless headset registration, deregistration
and use.
SynapseTM and SynJTM are trademarks of Advanced American Telephones.
26
Getting started
Add and register headsets
Register a headset to the headset base
Make sure the battery is properly installed in the headset (see
page 11). The light flashes slowly 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. the light flashes quickly in red and blue.
It takes about 60 seconds to complete the registration process.
The light turns red when the headset is registered but not fully
charged, or turns blue when it is registered and fully charged.
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 in red and blue.
To reset the headset, remove it from the headset base and try
the registration process again.
NOTE: You cannot register a headset if another system headset is in use.
1.
2.
3.
4.
5.
27
Getting started
Register a headset to an AT&T DECT cordless telephone base
You must deregister the headset from its headset base (see
page 28).
Make sure the battery is properly installed in the headset (see
page 11). The light on the headset flashes slowly 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.
On the telephone base of the cordless phone, press and hold
/HANDSET LOCATOR until the red IN USE light turns on (about
four seconds) and then release the button.
Place the headset back to its base.
The light flashes quickly in red and blue.
It takes about 60 seconds to complete the registration process.
The light turns red when the headset is registered but not fully
charged, or turns blue when it is registered and fully charged.
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 in red and blue.
To reset the headset, remove it from the headset base and try
the registration process again.
NOTE: The button used for registration on your cordless telephone system
may be different. Refer to your telephone user's manual for detailed
information.
1.
2.
3.
4.
5.
6.
Add and register headsets
28
Getting started
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.
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 1 above.)
It takes about 10 seconds to complete the deregistration
process. The light flashes slowly in red and blue when the
deregistration process is successful.
3. To register the headset(s) to the headset base again, follow the
registration instructions on page 26.
NOTES:
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.
•
•
29
Getting started
Replace a headset
Deregister all headsets 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.)
It takes about 10 seconds to complete the deregistration
process. The light flashes slowly in red and blue when the
deregistration process is successful.
3. To register the headset(s) to the telephone base again, follow
the registration instructions on page 27.
NOTES:
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.
The button used for deregistration on your cordless telephone system may be
different. Refer to your telephone user's manual for detailed information.
1.
2.
•
•
•
30
Operation
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 blue three times and you hear three beeps
when it 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 red three times and you hear three beeps
when it is being powered off.
PHONE mode and PC mode
Before using the headset, you may change the default mode of
your headset. When the headset is not in use and you press ,
your headset automatically switches to the default mode you
selected. When the headset is not in use, you can choose
between PHONE mode and PC mode.
To choose PHONE mode:
Press the PHONE button on the headset base. The PHONE
light turns on.
To choose PC mode:
Press the PC button on the headset base. The PC light turns on.
•
•
•
•
•
Operation
31
Operation
PHONE mode
Make a call
To make calls on your home or office telephone line, press
PHONE on the headset base for PHONE mode.
When the headset base is connected to the corded handset of
your telephone with the handset lifter installed:
1.
Press on the headset. The switch hook presser rises and releases
the switch hook. You hear a dial tone in the headset earpiece.
2. Dial the telephone number using the dialing keys.
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, you can hang up the telephone and
continue the call on the headset.
NOTES:
You cannot switch a call from the headset to the corded handset.
If you plug the headset into a telephone line without a telephone connected,
you are unable to make calls.
Answer a call
When the headset base is connected to the corded handset of
your telephone with the handset lifter installed:
Press on the headset to answer an incoming call. The switch
hook presser rises and releases the switch hook. You hear the
caller through the headset earpiece.
When the headset base is connected to a telephone wall jack:
Press on the headset.
1.
2.
3.
•
•
•
•
32
Operation
End a call
When the headset base is connected to the corded handset of
your telephone with the handset lifter installed:
Press on the headset to end a call. The switch hook presser
pushes down the switch hook and ends the call.
When the headset base is connected to a telephone wall jack:
Press on the headset or place the headset in the headset base.
Headset ringer
The headset base and headset do not have external ringers.
When you receive calls, the headset earpiece rings. 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 earpiece ringer:
Press VOL- until you hear two beeps when the headset is not
in use.
•
•
•
•
PHONE mode
33
Operation
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.
Call waiting
If you subscribe to call waiting service offered
by your telephone service provider, you will 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 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.
PHONE mode
34
Operation
PC mode
To make and receive calls through your computer, connect
the headset base to your computer using the USB cable
(see page 23).
Turn on PC mode
In idle mode, press the PC button on the headset base to use
your headset and your computer for VoIP calls. 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 computer speaker are turned on and set to an audible level
in your computer audio settings and your 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 computer
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 39-50.
Make, answer or end a call in PC mode
Press to use your headset for calls in PC mode. Use your VoIP
software to make new calls, answer incoming calls and end calls
as you normally would. Your headset should transmit and receive
all audio to and from your VoIP program.
35
Operation
Options while on calls
Volume control
To adjust the listening volume:
While on a call, press VOL+ or VOL- on the headset to adjuston the headset to adjust
the listening volume.
If you are on a VoIP call, you can also adjust the listening
volume in your computer audio settings and your VoIP calling
software.
To adjust the speaking volume:
While on a call, press VOLUME /MICROPHONEMICROPHONE on the side of
the headset base to adjust the speaking volume.
If you are on a VoIP call, you can also adjust the microphone
volume in your computer audio settings and your 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 beeps.
•
•
•
•
•
•
36
Operation
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. The MUTE light
on the headset base flashes and a short beep plays every 30
seconds.
To take a call off mute:
• Press MUTE/FLASH on the headset to resume the two-way
conversation and you hear the voice prompt "Mute off".
Multiple headsets/handsets use
In PHONE mode, 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.
In PC mode, another registered headset to the headset base can
join an external call in progress.
To join a call with a headset, press on the headset.
To end the call, press or place the headset in the headset base.
The call ends only when all handsets/headsets hang up.
37
Operation
Options while on calls
Switch between PHONE mode and PC 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.
When you have two registered headsets in use at the same time,
you can still change the mode by pressing the corresponding
mode button on the headset base.
While on a call:
You can press the PHONE button on the headset base when in
PC mode. The PC call is put on hold.
You can press the PC button on the headset when in PHONE
mode. The PHONE call is put on hold.
Press on the headset to end the call you are on and press
again to connect to the call on hold.
NOTE: There is a ring back tone on the headset when a PHONE call is put
on hold for 14 minutes and 30 seconds. At 15 minutes on hold, the call will
be automatically disconnected.
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.
•
•
38
Operation
Intercom
When you have registered your headset to an AT&T DECT
cordless telephone, follow the instructions in your telephone
user’s manual for intercom calls.
Answer an intercom call
Press on the headset to answer an intercom call.
Answer an incoming call during an intercom call
When 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
a DECT cordless headset.
End an intercom call
Press on the headset to end an intercom call.
•
•
39
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 (866) 288-4268.
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 and then power it on
(page 30). 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 the Battery
installation section on page 11 of this user’s manual.
The other party cannot hear my voice during a call.
Adjust the speaking volume during a call (page 35).
There is no dial tone.
• Try all the suggestions above.
• Move the cordless headset closer to the headset base. You
might have moved out of range.
•
•
Appendix
40
Appendix
Make sure that the CORDED HANDSET CONNECTED switch is
set properly (page 13).
• Your telephone line cord may be defective. Install 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 installation
section on page 11.
• Your headset might be defective. Refer to the Limited
warranty section on pages 61-64 for further instructions.
I cannot dial out.
• 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
(page 31).
• 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).
•
•
Troubleshooting
41
Appendix
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. Power off the headset and then power it
on (page 30). 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.
I get noise, static, or a 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 the headset base at least one foot from
any cordless telephone system. If separating them by one foot
does not help, try moving the headset farther away.
• 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.
Troubleshooting
42
Appendix
• Do not install this headset near a microwave oven or in
the same electrical outlet. You may experience decreased
performance while the microwave oven is operating.
• If your headset is located near a modem, move your headset
and modem further apart from each other.
• 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).
I cannot hear a ring tone from the headset when there is an
incoming call.
• The headset does not have an external ringer. You can only
hear the ring tone when you are wearing 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 location.
• 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.
•
Troubleshooting
43
Appendix
• Your telephone line cord may be defective. Install a new
telephone line cord.
• 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).
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 in your computer audio settings and your VoIP
calling software.
Make sure the audio settings in your VoIP calling software are
set to use your "AT&T DECT Headset".
•
Troubleshooting
44
Appendix
Troubleshooting
The person on the other end cannot hear me 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 microphone volume is turned on and
set to an audible level in your computer audio settings and in
your VoIP calling software.
• Make sure the audio settings in your VoIP calling software 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 computer 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 computer 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.
Click "OK" to save your settings and exit.
1.
2.
3.
4.
5.
6.
7.
45
Appendix
Troubleshooting
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 computer 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 computer
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.
Click "OK" to save your settings and exit.
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 computer 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 computer
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.
Click "OK" to save your settings and exit.
1.
2.
3.
4.
5.
6.
7.
1.
2.
3.
4.
5.
6.
46
Appendix
Troubleshooting
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 computer
speakers as the “Sound Output” device, and then adjust the
“Output volume” slider to the desired level. Make sure the
“Mute” box is unchecked.
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.
Close the window when done.
• If you still cannot hear audio through your computer 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 28), and then register it to the new headset base
(page 26).
I cannot answer an incoming call in PC mode.
• Your headset cannot directly answer a call to your computer.
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 in your computer audio settings and your VoIP
calling software.
1.
2.
3.
4.
47
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 base as far away as possible from these
types of electronic devices.
• Do not install the 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 located near a modem, move your headset
and modem further apart from each other.
• 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 dry cloth.
• Your headset or headset base might be defective. Refer to
the Limited warranty section on pages 61-64 for further
instructions.
•
•
•
48
Appendix
The switch hook presser of the handset lifter doesn’t rise at all.
• Make sure the CORDED HANDSET CONNECTED switch on the
headset base is set to YES.
• Make sure the lifter control cable is securely plugged into the
LIFTER jack on the headset base.
Make sure all cords and the telephone line cord are securely
connected to the proper sockets.
• Make sure the headset base has power.
Make sure your headset is charged and registered to the
headset base.
When I press on the headset, the handset lifter rises, but
the call is not connected or I do not hear a dial tone.
• Try all the suggestions above.
• When using the handset lifter, make sure the CORDED
HANDSET CONNECTED switch on the headset base is set to
YES and the telephone line cord is connected to the telephone
line jack on the back of the corded phone.
• The handset lifter may not rise high enough to release the
switch hook. Try to adjust the height of the lifter arm by
turning the ADJUST LIFTER knob until it reaches the desired
angle. Adjust the switch hook presser by turning the switch
hook presser adjustment knob so that the switch hook is
released when the lifter arm rises.
• If you cannot hear a dial tone when the headset is on, you
should adjust the quality of the corded handset audio first.
During a call, slide the corded handset audio adjust switch at
the bottom of the headset base from A to F until you obtain
good sound quality.
•
•
Troubleshooting
49
Appendix
Troubleshooting
• If the previous suggestions don’t work, disconnect the
telephone base from the telephone jack and connect a
different telephone. If there is no dial tone on that telephone
either, the problem is in your wiring or local service. Contact
your telephone service provider.
• Your line cord might be defective. Install a new line cord.
My corded phone is ringing, but my headset is not ringing.
• Make sure the CORDED HANDSET CONNECTED switch on the
headset base is set to YES.
• Make sure that the RING ON/OFF button on the lifter is turned
on. If the RING ON/OFF button is turned off, the headset does
not ring.
•
If the speaker of your corded phone is not located under the lifter,
install the auxiliary ring detector. See page 20 for instructions.
• It may be necessary to adjust the sensitivity of the ring
detector. See page 21 for instructions.
• If an auxiliary ring detector is used, make sure its cord is
completely plugged into the handset lifter.
• Make sure all cords and the telephone line cord are plugged
into the appropriate outlets.
• Make sure your headset is charged.
I cannot dial out on the headset when the CORDED HANDSET
CONNECTED switch is set to YES.
• Try all the suggestions above.
• Make sure you have a dial tone before dialing.dialing.. It is normal for
a telephone base to take a second or two before producing a
dial tone. Wait an extra second before dialing.dialing..
The other party cannot hear my voice during a call.
• Make sure your headset microphone is not muted.
During a call, slide the corded handset audio adjust switch at
the bottom of the headset base from A to F until you obtain
good sound quality.
•
50
Appendix
Nothing happens when I move the corded handset audio
adjust switch.
• When the handset lifter is used, make sure the CORDED
HANDSET CONNECTED switch on the headset base is set
to YES. Slide the corded handset audio adjust switch at the
bottom of the headset base from A to F until you obtain good
sound quality.
My headset is ringing even when there is no incoming call.
The sensitivity level of your ring detector may be too high. See
page 21 to adjust the sensitivity level.
The ring detector may detect a sound from the environment
and send a ring tone to the headset. See page 21 to turn off
the ring detector.
When you are using the speakerphone of your telephone, the
ring detector may send a ring tone to the headset. If you do
not want the headset to ring, press the RING ON/OFF button
to turn the ring detector off. After the call, you can press the
RING ON/OFF button again to turn the ring detector back on.
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 the 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.
•
•
•
Troubleshooting
51
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 the headset to report a gas leak in the vicinity of
the 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.
•
•
•
•
•
52
Appendix
Important safety information
If this product does not operate normally, see the
Troubleshooting section on pages 39-50 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
61-64. 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.
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 (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.
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•
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•
53
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 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
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.
•
•
•
•
•
•
54
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 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 devices):
Wireless Technology Research, LLC (WTR), an independent
research entity, led a multidisciplinary evaluation of the
interference between portable digital cordless devices and
implanted cardiac pacemakers. Supported by the U.S. Food and
Drug Administration, WTR recommends to physicians that:
Pacemaker patients
Should keep digital cordless devices at least six inches from
the pacemaker.
Should NOT place digital cordless devices directly over the
pacemaker, such as in a breast pocket, when it is turned ON.
Should use the digital cordless device at the ear opposite the
pacemaker.
WTR’s evaluation did not identify any risk to bystanders with
pacemakers from other persons using digital cordless devices.
SAVE THESE INSTRUCTIONS
•
•
•
•
•
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•
55
Appendix
Maintenance
Taking care of your headset and handset lifter
Your cordless headset and handset lifter contain sophisticated
electronic parts, so it must be treated with care.
Avoid rough treatment.
Place the headset and the handset lifter down gently. Save the
original packing materials to protect your headset if you ever
need to ship it.
Avoid water
Your headset or handset lifter can be damaged if it gets wet.
Do not use the headset or the handset lifter 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 and handset lifter
Your headset and handset lifter have durable plastic casings
that should retain luster for many years. The handset lifter has
a metal motor enclosed. Disconnect all cables before cleaning.
Clean the headset and the handset lifter only with a soft cloth
slightly dampened with water or 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.
56
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 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.
57
Appendix
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.
58
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 1.0. 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.
59
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.
60
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.
61
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.
62
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
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63
Appendix
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 (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'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.
64
Appendix
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.
a.
b.
65
Appendix
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
Replacement battery 3.7V 240mAH
Technical specifications
DECT 6.0 digital technology
The AT&T DECT 6.0 products offer unsurpassed range performance and
sound clarity. This is achieved through a unique antenna design and
advances in noise-filtering technology. An independent laboratory has
confirmed that AT&T DECT 6.0 products outperform the range claims of
other headsets. Now calls can be taken in the basement, backyard and
garage with exceptional sound quality.
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
The TL7912 is a fully cordless DECT 6.0 headset offering a range of up
to 500 ft. Sound level protection technology conforms to the current
regulations and is used to filter out the loud and high-pitched noises.
Encrypted for added security
The 64 bit encryption adds an extra layer of security between your
TL7912 headset and TL7912 base to keep your conversations private.
www.telephones.att.com
© 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.
SynapseTM and SynJTM are trademarks of Advanced American Telephones.
Printed in China. Issue 1 AT&T 05/12