AT&T CL4939 User Manual

Quick start guide

CL4939
Big button big display

telephone/answering
system with caller ID/
call waiting

This quick start guide provides basic instructions. For additional installation
options and complete instructions that enable you to use all features of this
telephone, refer to your AT&T CL4939 big button big display telephone user’s
manual.

Telephone installation

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.

Plug one end of the coiled handset cord into the handset jack on the left

1.
side of the telephone base. Plug the other end into the handset and hang up.

Handset

Coiled handset cord

Plug one end of the telephone line cord into the TEL LINE jack on the back

2.
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

3.
of the telephone base. Plug the large end into a standard electrical outlet
not controlled by a wall switch.

not controlled by
a wall switch

Telephone line
cord

Telephone wall jackElectrical outlet

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

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Telephone installation

Lift the handset or press SPEAKER to check for a dial tone.

4.
Rotate the top of the display up or down to adjust the angle of the screen

5.
for maximum visibility.

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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Quick reference guide

REMOVE

While reviewing the call
history entries,
press and hold to clear
the call history.

While reviewing an
entry stored in the
directory or call history
entries, press to delete.

While entering names
(or numbers), press to
backspace and erase a
character (or digit).

DISPLAY DIAL

Press to dial the
number currently
displayed.

MEM

Press to access two­touch memory.

FLASH

During a call, press to
answer an incoming call
if you subscribe to call
waiting service provided
by your telephone
service provider.

Press to cancel an
operation and return to
idle mode.

CID/

Press to display the call
history.

While using the menu,
press to scroll through
the settings.

While reviewing the
directory or call history,
press to scroll down.

DIR/

Press to enter the
directory.

While using the menu,
press to scroll through
the settings.

While reviewing the
directory or call history,
press to scroll up.

SELECT

While using the menu,
press to save the
setting and move to the
next menu option.

While reviewing the call
history, press to show
dialing formats.

REDIAL/PAUSE

While using the handset
or speakerphone, press
to dial the last number
dialed.

While editing numbers
in the two-touch
memory or directory,
press to copy the last
number dialed.

While entering numbers,
press to insert a four­second dialing pause.

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