AT&T CL4939 User manual

User’s manual
CL4939
Big button big display
telephone/answering
system with caller ID/
call waiting

Audio assist™ and Message guard™ are trademarks of Advanced American Telephones.
© 2009 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.
Congratulations
on purchasing your
new AT&T product.
Before using this AT&T product, please
read the Important safety information
on page 60 of this user’s manual.
Please thoroughly read the user’s
manual for all the feature operations
and troubleshooting information you
need 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 #: CL4939
Type: Big button big display telephone with answering system
Serial #: _________________________________________________________________
Purchase date: ___________________________________________________________
Place of purchase: _______________________________________________________
Telephones identified with this logo have reduced noise and
interference when used with most T-coil equipped hearing
aids and cochlear implants. The TIA-1083 Compliant Logo is
a trademark of the Telecommunications Industry Association.
Used under license.

Parts checklist
Your telephone package contains the following items. Save your sales receipt
and original packaging in the event warranty service is necessary.
Coiled handset cord Telephone line cordPower adapter
HandsetTelephone base with mounting
bracket installed
User’s manual Quick start guide

STOP!
If you subscribe to high-speed Internet service (digital subscriber line - DSL)
through your telephone line, you must install a DSL filter between the
telephone line cord and the telephone wall jack (page 7). The filter prevents
noise and caller ID problems caused by DSL interference. Please contact your
DSL service provider for more information about DSL filters.
Your product may be shipped with a protective sticker covering the telephone
base display - remove it before use.
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 telephone base too close to:
Communication devices such as: television sets, VCRs, or 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.
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User’s manual
CL4939
Big button big display
telephone/answering
system with caller ID/
call waiting
Table of contents
Getting started
Introduction ..............................................1
Quick reference guide.........................2
Indicator lights and tones .................4
Screen messages ...................................5
Telephone installation.........................7
Installation options ...............................9
Telephone settings
Volume control.....................................14
Menu setup ............................................15
Telephone operation
Making and answering a call ........21
Chain dialing .........................................22
Last number redial .............................23
Options while on calls......................24
Line power mode
(no AC power).................................26
Two-touch memory
Two-touch memory overview
and storage......................................27
Reviewing and dialing a
two-touch number........................28
Deleting a two-touch number......29
Directory
Directory overview .............................30
Directory storage ................................31
Reviewing and dialing a directory
entry ....................................................32
Deleting a directory entry .............. 33
Caller ID operation
Caller ID overview ..............................34
Reviewing call history.......................37
Returning a call ...................................38
Storing a call history entry in the
directory.............................................39
Storing a call history entry in a
two-touch location....................... 40
Deleting call history entries ..........41
Answering system operation
Answering system overview..........42
Answering mode .................................43
Outgoing announcement................44
Message playback ..............................46
Recording and playing memo.......48
Call screening, priority call
and call intercept..........................49
Remote access .....................................50
Appendix
Troubleshooting...................................52
General product care........................59
Important safety information........60

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FCC and ACTA information ............61
Part 15 of FCC rules..........................63
Limited warranty .................................64
Technical specifications...................66
Index..........................................................67
Remote access wallet card............69

1
Introduction
This AT&T CL4939 big button big display telephone has a large tilt display for
easy viewing and extra large buttons for easy viewing and dialing.
You must use the supplied power adapter to use most features of this
telephone. In the event of power failure, this telephone works only to make or
answer calls with the handset. Refer to Line power mode (no AC power) on
page 26 for more details.
This telephone is hearing-aid compatible. This telephone features a
speakerphone for hands-free use.
This telephone also features 10 two-touch memory locations for speed dialing
and has a directory that can store up to 25 additional numbers with names.
This telephone supports caller ID with call waiting service. (Caller ID services
are subscriber services available from your telephone service providers and
fees may apply.)
This telephone also features a built-in digital answering system that can store
approximately 19 minutes of messages and memos with a total of up to 99
messages. You can access the answering system from a remote touch-tone
telephone.
This user’s manual contains detailed instructions for using your AT&T CL4939
big button big display telephone. Please read this user’s manual before using
this CL4939 telephone.
Getting started

2
Getting started
Quick reference guide
REMOVE
While reviewing the call
history entries, press and
hold to clear the call
history (page 41).
While reviewing an entry
stored in the directory
or call history, press to
delete (pages 33 and 41).
While entering names
(or numbers), press to
backspace and erase
a character (or digit)
(page 31).
DISPLAY DIAL
Press to dial the
number currently
displayed (pages 32
and 38).
MEM
Press to access the two-
touch memory (page 27).
FLASH
During a call, press to
answer an incoming call
if you subscribe to call
waiting service provided
by your telephone
service provider
(page 25).
Press to cancel an
operation and return to
idle mode (page 15).
CID/
Press to display the call
history (page 37).
While using the menu,
press to scroll through
the settings (page 15).
While reviewing the
directory or call history,
press to scroll down
(pages 32 and 37).
DIR/
Press to enter the
directory (page 32).
While using the menu,
press to scroll through
the settings (page 15).
While reviewing the
directory or call history,
press to scroll up
(pages 32 and 37).
SELECT
While using the menu,
press to save the setting
and move to the next
menu option (page 15).
While reviewing the call
history, press to show
dialing formats (page 38).
REDIAL/PAUSE
While using the handset
or speakerphone, press
to dial the last number
dialed (page 23).
While editing numbers
in the two-touch
memory or directory,
press to copy the last
number dialed
(pages 27 and 31).
While entering numbers,
press to insert a four-
second dialing pause
(page 21).

3
Getting started
Quick reference guide
MENU
Press to enter the menu
(page 15).
While reviewing the call
history, press to store
the displayed name and
number in the directory
(page 39).
MUTE
During a call, press
to mute the handset
or speakerphone
microphone. Press
again to resume your
conversation (page 24).
AUDIO ASSIST™
Some voices will sound
louder and clearer
if you press AUDIO
ASSIST while you are
on a call using the
handset (page 24).
RINGER VOL switch
Slide to adjust the ringer
volume (page 14).
VOL switch
Slide to adjust the
listening volume on the
handset (page 14).
VOL switch
Slide to adjust the
listening volume on the
speakerphone (page 14).
While playing back
messages, slide to
adjust the playback
volume (page 46).
SPEAKER
Press to turn on the
base speakerphone.
Press again to end the
call (page 21).
Audio assistTM is a trademark of Advanced American Telephones.
REPEAT/MEMO
While the telephone is
playing the day and time
the current message
was received, press to
go back to the previous
message (page 46).
After the telephone
plays the day and time
the current message
was received, press
to repeat the current
message (page 46).
Press to record memos
(page 48).
ANS ON/OFF
Press to turn the
answering system on or
off (page 43).
DELETE
Press to delete the
message currently
playing (page 46).
Press twice to delete all
old messages when the
telephone is not in use
(page 47).
SKIP/ANNC
Press to skip to the next
message (page 46).
Press to record or
play the outgoing
announcement
(pages 44 and 45).
PLAY/STOP
Press to start or stop
message playback
(page 46).
Press to stop recording
(pages 44 and 48).

4
Getting started
Indicator lights and tones
Indicator lights
Alert tones
Beep
(Key tone)
A key is pressed.
Beeeep
(One short beep)
Command of the answering system is completed successfully.
Beeeeeeeep
(One long beep)
The answering system begins to record an announcement or a
memo.
Three short high-pitched beeps
(Confirmation tone)
Command is completed successfully.
One long low-pitched beep
(Error tone)
Command has failed.
The number you entered in the directory or two-touch
memory is over 24 digits.
The name you entered in the directory is over 15 characters.
There are no telephone numbers stored in the directory.
You have reached the end of the directory records.
There are no call history entries.
You have reached the end of the call history entries.
There is no telephone number in the call history entry you
dialed.
There is no telephone number in the call history entry you
saved in the directory or two-touch memory.
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Beep-beep every 15 seconds
(Message alert tone)
There are new messages.
Four high- then low-pitched
beeps
(Priority call tone)
The incoming call is a priority call.
IN USE
On when the line is in use or the answering
system is answering a call.
Flashes when there is an incoming call.
ANS ON/OFF
On when the answering system is on.
PLAY/STOP
Flashes when there are new (unreviewed)
messages.
AUDIO ASSIST
On when the audio assistance feature is in use.
MUTE
On when the microphone is muted.
SPEAKER
On when the speakerphone is in use.

5
Getting started
Screen messages
Screen icons
NEW The displayed call history entry is unreviewed.
REP You have received more than one call from this
number.
16 The position of the number stored in the call
history.
The ringer is turned off.
There is an error in the caller ID information.
The message window usually displays the total
number of messages. See the table below for
explanations of other displays in this window.
(blank) The answering system is off.
-- The answering system is answering a call.
-OR-
The answering system is being accessed remotely.
0 No messages.
1-99 Total number of messages and memos. During
playback, the number of the message.
0-59
(counting)
Elapsed time while recording a memo.
A You have accessed the announcement menu.
AP The announcement you recorded is playing.
dE All old messages are deleted, the message
currently playing is deleted, or the announcement
currently playing is deleted.
F The answering machine memory is full. Delete
some messages to make room for more.
Message window displays
Message window
ERR 12:00AM11-2016 15
16 CALLS 5 NEW
ERR 12:00AM11-2016 15
16 CALLS 5 NEW

6
Getting started
Display screen messages
Screen messages
DELETED All the entries stored in call history have
been deleted.
-OR-
The directory or two-touch memory entry
has been deleted.
DIRECTORY EMPTY There are no telephone numbers stored in
the directory.
CALL LOG EMPTY There are no entries in the call history.
END OF LIST You have reached the end of the call
history records.
LINE IN USE Another telephone on the same line is in
use.
-OR-
No telephone line cord is connected to
the telephone.
RINGING There is an incoming call.
NO AC POWER There is no AC power. Check the power
adapter connection to the telephone and
the electrical wall outlet.
MEMORY FULL The directory is full.
ONLY 15 ALLOWED The name you entered in the directory is
over 15 characters.
ONLY 24 ALLOWED The number you entered in the directory
or two-touch memory is over 24 digits.
SET CLOCK The clock needs to be set.
STORED The entry is saved in the directory or
two-touch memory location successfully.
XX CALLS YY NEW There are XX calls in the call history
and YY of them are new (missed and
unreviewed).

7
Getting started
If you subscribe to high-speed Internet service (digital subscriber line - DSL)
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. Please contact your DSL service
provider for more information about DSL filters.
Follow the steps below to install the telephone.
Telephone installation
Plug one end of the coiled handset cord into the handset jack on the left
side of the telephone base. Plug the other end into the handset and hang up.
1.
Plug one end of the telephone line cord into the TEL LINE jack on the back
of the telephone base. Plug the other end of the telephone line cord into a
telephone wall jack.
Plug the small end of the power adapter into the POWER jack on the back
of the telephone base. Plug the large end into an electrical outlet not
controlled by a wall switch.
2.
3.
Handset
Coiled handset cord
Telephone line cord
DSL filter (not included) is
required if you have DSL
high-speed Internet service.
Telephone wall jackElectrical outlet
not controlled by
a wall switch

8
Getting started
Lift the handset or press SPEAKER to check for a dial tone.
Rotate the top of the display up or down to adjust the angle of the screen
for maximum visibility.
4.
5.
NOTES:
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].
The power adapter is intended to be correctly oriented in a vertical or floor
mount position. The prongs are not designed to hold the plug in place if it
is plugged into a ceiling, under-the-table or cabinet outlet.
You can use this telephone without the power adapter installed. In this
case, the telephone works only to make or answer calls with the handset,
or adjust the ringer volume or handset listening volume. For optimal
performance, power your telephone with the supplied power adapter.
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Telephone installation

9
Getting started
Installation options
The telephone base comes with the bracket mounted for tabletop use. If
you want to mount your telephone on a wall, use the mounting bracket to
connect with a standard dual-stud telephone wall mounting plate. If you do
not have this mounting plate, you can purchase one from many hardware
or consumer electronic retailers. Professional assistance may be required to
install the mounting plate.
Tabletop to wall-mount installation
To install the telephone base in the wall-mount position, make sure you first
unplug the power adapter from the electrical outlet and unplug the telephone
line cord from the wall outlet.
Lift the handset and place it aside. Hold down the switch hook on the
telephone base, then slide the handset tab upwards to remove it from the
slot. Rotate the handset tab 180 degrees. Push the handset tab down into
the grooves so it settles into position.
1.
Grasp and squeeze as the arrows indicate to open the hinged bracket.
Rotate the bracket and lock it into wall-mount position as indicated below.
2.
Tabletop
position
Wall-mount
position
Switch hook
Handset tab

10
Getting started
Installation options
Plug one end of the telephone line cord into the TEL LINE jack on the
back of the telephone base. Route the telephone line cord through the
slot. Bundle the telephone line cord and secure it with a twist tie. Place
the bundled telephone line cord inside the hole in the center of the
telephone bottom.
Plug the other end of the telephone line cord into a telephone wall jack.
3.
4.
Place the telephone just above the telephone outlet mounting studs. Slide
the telephone down until the telephone is held securely on the telephone
outlet mounting studs. Place the handset in the telephone base.
5.
DSL filter (not included) is
required if you have DSL
high-speed Internet service.

11
Getting started
Plug the small end of the power adapter into the POWER jack on the back
of the telephone base. Plug the large end into an electrical outlet not
controlled by a wall switch.
Rotate the top of the display up or down to adjust the angle of the screen
for maximum visibility.
6.
7.
Installation options
Wall-mount to tabletop installation
To change the telephone base from the wall-mount position to tabletop
position, follow the steps below.
Unplug the large end of the power adapter from the electrical outlet.
Unplug the small end of the power adapter from the POWER jack on the
back of the telephone base.
Slide the telephone base upwards, then pull the telephone base away from
the wall and remove from the studs.
1.
2.
Unplug the telephone line cord from the telephone base and telephone
wall jack. Untie the bundled telephone line cord. Remove the telephone
line cord from the slot on the bottom of the telephone base.
3.

12
Getting started
Installation options
Lift the handset and place it aside. Hold down the switch hook on the
telephone base, then slide the handset tab upwards to remove it from the
slot. Rotate the handset tab 180 degrees. Push the handset tab down into
the grooves so it settles into position.
4.
Lift and rotate the bracket and lock it into tabletop position as indicated below.5.
Plug one end of the telephone line cord into the TEL LINE jack on the back
of the telephone base. Plug the other end of the telephone line cord into a
telephone wall jack. Place the handset in the telephone base.
6.
Wall-mount
position
Tabletop position
Switch hook
Handset tab

13
Getting started
Installation options
Plug the small end of the power adapter into the POWER jack on the back
of the telephone base. Plug the large end into an electrical outlet not
controlled by a wall switch.
7.
Rotate the top of the display up or down to adjust the angle of the screen
for maximum visibility.
8.
Telephone line cord
DSL filter (not included)
is required if you have
DSL high-speed Internet
service.
Telephone wall jackElectrical outlet
not controlled by
a wall switch

14
Volume control
Ringer volume
Use the RINGER VOL switch on the right side of
the telephone base to set the ringer volume or
turn the ringer off.
Adjust the RINGER VOL switch to set the ringer
volume to off, low, middle or high. When set to off,
the screen shows .
NOTE: The volume of the priority call tone
cannot be adjusted. Refer to Priority call on page
49 for details.
Handset volume
Use the VOL switch on the right side of the
telephone base to adjust the listening volume
from the handset.
Speakerphone volume
Use the VOL switch on the right side of the
telephone base to adjust the listening volume
from the speakerphone.
Telephone settings