AT&T TL8901 User manual

User’s manual
TL8900/TL8901
DECT 6.0
accessory cordless headset

Congratulations
on your purchase of this AT&T product.
Enjoy up to 12 hours of hands-free talk time and crystal-clear
sound quality with the AT&T TL8900/TL8901 DECT 6.0 Accessory
Cordless Headset. Pair it wirelessly with compatible AT&T DECT
phones or other compatible DECT phones. Easy one-button
answer, volume and mute controls enhance wireless freedom,
while a range of up to 500 feet maximizes mobility. A magnetic
charger in the cradle ensures the headset ts and charges
securely—so you’ll never run out of battery during long calls.
Lightweight and comfortable, the headset oers multiple
wearing styles: over the ear, over the head or behind the neck.
Before using this AT&T product, please read the Important
safety information section on pages 37-39 of this manual.
Please thoroughly read this user’s manual for the feature
operations and troubleshooting information necessary to install
and operate your new AT&T product. You can also visit our
website at https://telephones.att.com or call
1 [phone]. In Canada, dial 1 [phone].
This telephone meets the California Energy Commission
regulations for energy consumption. Your telephone is set up to
comply with the energy-conserving standards right out of the
box. No further action is necessary.
Visit https://telephones.att.com/headsets for a
complete list of AT&T phones that have been tested and found to
be compatible with the TL8900/TL8901.

Model number: TL8900/TL8901
Type: DECT 6.0 accessory 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 charger.
Save your sales receipt and original packaging in case it is
necessary to return this product for warranty service.
© 2019 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 earbud
attached
Headset charger
Battery
with battery
compartment
cover attached
User's manual
Behind the neck
band
Headset charger
power adapter
Four over the ear hooks Over the head
bands
Four earbuds Sponge
cover for ear
hooks
Two spare rubber
rings for headset
earpiece
User’s manual
TL8900/TL8901
DECT 6.0 cordless headset

User’s manual
TL8900/TL8901
DECT 6.0
accessory cordless headset
Table of contents
Getting started
Quick reference guide -
headset.............................................1
Headset lights ..............................2
Headset alert tones..................3
Headset alert prompts...........3
Quick reference guide -
headset charger ........................ 4
Installation ..........................................5
Battery installation ...................... 6
Headset charger installation
and battery charging...............7
Adding and registering
headsets ......................................... 8
Register a headset to the
SynJ SB67138 base................... 9
Register a headset to an
AT&T DECT telephone
base....................................................11
Deregistering headset.............. 13
Deregister headset from
the SynJ SB67138 base......... 13
Deregister all devices from
an AT&T DECT telephone
base................................................... 15
Headset attachments............... 16
Over the ear hook.................... 16
Over the head band................20
Behind the neck band...........23
Operation
Headset operation ......................26
Power on/o the headset...26
Make a call.....................................26
Answer a call................................26
End a call ........................................26
Headset ringer........................... 27
Temporary ringer
silencing..........................................27
Call waiting ...................................27
Options while on calls ...............28
Volume control..........................28
Mute..................................................28
Multiple headsets use...........29
Appendix
Troubleshooting............................30
Maintenance....................................36
Important safety
information.................................. 37
Safety information.................. 37
Especially about cordless
headsets ........................................38

Precautions for users
of implanted cardiac
pacemakers .................................39
Pacemaker patients...............39
For C-UL compliance..................40
Mesures de sécurité
importantes.................................40
FCC Part 68 and ACTA...............44
FCC Part 15........................................46
California Energy Commission
battery charging testing
instructions..................................47
Limited warranty ..........................48
Technical specications............51
DECT 6.0 digital
technology ....................................51
Operating range ........................51
Extended range and
clarity.................................................51
Index
Index...................................................... 52

1
Quick reference guide - headset
Getting started
(On/o button and light)
XPress to make, answer or
end a call (page 26).
Earpiece
Battery with cover attached
XRemove to replace the
battery (page 6).
VOL+/FLASH/VOL-
XSlide the volume switch to
the right or le to adjust the
headset ringer volume while
in idle mode, or the listening
volume while on a call (page
27 or page 28).
XDuring a call, press to answer
an incoming call when you
receive a call waiting alert
(page 27).
MUTE
XPress to mute the
microphone during a call
(page 28).
XPress to mute the ringer in
the earpiece when there
is an incoming call (page
27).
Microphone
XThe microphone
incorporates noise
canceling technology for
clearer calls.
4
5
6
3
2
1

Getting started
2
Quick reference guide - headset
Color LED light status Meaning
Red Steady light on The battery is low and the headset
is charging in the headset charger.
Flash every 10 seconds The battery is low and the headset
is not in the headset charger.
Flash 3 times Powering o.
Blue Steady light on The battery is fully charged.
Flash every 10 seconds The headset is not in the headset
charger.
Flash 2 times every
3 seconds
The headset is in use.
Flash 3 times Powering on.
Flash 4 times every
4 seconds
There is an incoming call.
Purple Steady light on The battery is well charged.
Red and
blue
Alternate slowly The headset is not registered.
Alternate quickly The headset is trying to register to
a telephone base.
O Light o The battery is depleted.
No battery is installed.
The headset is powered o.
Headset lights

Getting started
3
Alert tone behavior Meaning
One short beep every
30 seconds
XThe microphone is muted.
Two beeps XError alert tone.
XThe speaking volume has reached its
highest or lowest setting.
XAny key is pressed while the headset is out
of range.
Two low beeps XCall waiting alert tone.
Two rapid beeps
every 20 seconds
XLow battery warning.
Three rapid beeps
every 20 seconds
XThe headset is out of range.
Three rapid beeps XThe headset is powering on or o.
Headset alert tones
Alert prompt Meaning
“Mute on”XThe microphone is muted.
“Mute o”XThe microphone is re-activated.
“Not registered”XON/OFF button is pressed while the
headset is not registered.
“Out of range”XThe headset is on a call and out of range.
XAny key is pressed while the headset is out
of range.
“Low battery”XON/OFF button is pressed while the
headset battery is low.
Headset alert prompts
Quick reference guide - headset

Getting started
4
Quick reference guide - headset charger
Power jack
Magnetic charging mount
Place the headset here for
charging.
Power cord slot
Route the power cord
through the slot.