AT&T ML17939 User manual

Quick start guide
ML17939
Two-line corded telephone/
answering system with
caller ID/call waiting

1
Installation preparation
You must install the power
adapter before using the
telephone.
If you subscribe to high speed Internet service (DSL - digital subscriber line)
through your telephone line, you must install a DSL filter between each
telephone line cord and telephone wall jack (pages 4 and 5). 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 a washing machine or
work bench.
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See pages 4-5 for easy
instructions.

2
Optional backup battery installation
Install three AA alkaline batteries (purchased separately) to use this telephone
in the event of a power failure. If power fails with working batteries installed,
all functions work properly except for the display illumination.
If power fails and no batteries are installed, you can make or answer calls on
line 1 using only the handset. Last number redial and speed dialing are also
supported, but the screen display will be dimmer than usual.
Install the batteries, as shown below:
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 ML17939 Two-line corded telephone/answering
system with caller ID/call waiting user’s manual.
Press the tab and pull to remove the battery compartment cover. Insert
three AA alkaline batteries (purchased separately) following the polarity
markings in the battery compartment.
1.
Replace the battery compartment cover.2.
NOTE: If no backup batteries are installed and the power adapter is connected, appears
steady on the screen.

3
Telephone installation
Telephone base installation
Install the mounting bracket for tabletop use.
Option 1: To install your telephone in a low tabletop position, insert the fixed
tabs of the mounting bracket into slots aand b. Press the flexible tabs
Aand Binto slots cand duntil they click into place.
1.
AB
A B
c
Option 1: Low tabletop position
Option 2: To install your telephone in a high tabletop position, insert the fixed
tabs of the mounting bracket into slots cand d. Press the flexible tabs
Aand Binto slots aand buntil they click into place.
A
A
Option 2: High tabletop position
c

4
Telephone installation
Connect the telephone line cord(s) and the power cord to the telephone base.
If you subscribe to high speed Internet service (DSL - digital subscriber line)
through your telephone line, you must install a DSL filter between each
telephone line cord and 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.
Option 1: If you have a two-line wall jack, install your telephone base, as
shown below.
2.
Plug the other end of the
coiled handset cord into
jack at the left side of the
telephone base.
Plug the small end
of the power adapter
into the power jack
on the back of the
telephone base.
Plug one end of the
black telephone line
cord (4-conductor)
into the jack labeled
LINE 1/L1+L2 on
the back of the
telephone base.
Plug the other end of the black
telephone line cord (4-conductor)
into the wall jack.
Plug the large
end of the power
adapter into an
electrical outlet
not controlled by
a wall switch.
If you have DSL
high speed Internet
service, a DSL filter
(not included) is
required.
NOTES:
Use only the power adapter supplied with this product. To order a replacement power
adapter, 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.
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L1+L2
One end of the coiled telephone
line cord has already been plugged
into the handset. Make sure it is
plugged in firmly.

5
Telephone installation
Option 2: If you have two one-line wall jacks, install your telephone base, as
shown below.
Plug one end of the
clear telephone line
cord (2-conductor)
into the jack labeled
LINE 1/L1+L2 on
the back of the
telephone base.
Plug the other end of
the clear telephone
line cord (2-conductor)
into the wall jack.
Plug one end of the
black telephone line
cord (4-conductor)
into the jack labeled
LINE 2 on the back of
the telephone base.
Plug the other end of
the black telephone
line cord (4-conductor)
into the wall jack.
NOTES:
Use only the power adapter supplied with this product. To order a replacement power
adapter, 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.
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Plug the large
end of the power
adapter into an
electrical outlet
not controlled by
a wall switch.
If you have DSL high
speed Internet service,
a DSL filter (not
included) is required.
Plug the small
end of the power
adapter into the
power jack on
the back of the
telephone base.
L1 L2
Plug the other
end of the coiled
handset cord
into jack at the
left side of the
telephone base.
One end of the coiled
telephone line cord
has already been
plugged into the
handset. Make sure it
is plugged in firmly.

6
Quick reference guide
CANCEL
Press to cancel an operation and go back
to the previous menu.
Press and hold to return to idle mode.
CID
Press to display call history information.
MENU
Press to enter the main menu.
DIR
Press to enter the directory.
DELETE
Press to delete the displayed directory or call history entry.
Press to backspace and erase a digit or character.
During message playback, press to delete the message currently playing.
When the telephone is idle, press to delete all old messages.
CONF
Press to initiate a three-way conference call.
LINE 1, LINE 2
Press to make or answer a call on the selected line.
HOLD
Press to place a call
on hold.
ENTER
Press to select a
menu item or to
save a setting.
/REPEAT
While playing messages,
press to repeat the message,
or press twice to hear the
previous message.
While entering names or
numbers, press to move the
cursor to the left.
Press to go back to the
previous menu.
/ANS ON/OFF LINE1/LINE2
Press to turn the built-in
answering system on or off.
/PLAY/STOPPLAY/STOP LINE1/LINE2
Press to start or stop
message playback.
Press to stop recording a
memo.
/
While in the menu, press to
scroll up or down.
While reviewing the directory
or call history, press to
scroll through entries or
press and hold to scroll
continuously.
/SKIP
Press to skip to the next
message.
While entering names or
numbers, press to move the
cursor to the right.

7
Quick reference guide
VOL-
While the telephone is not in
use, press to decrease the ringer
volume for both lines.
During a call, press to decrease
the listening volume.
During message playback, press to
decrease the playback volume.
HEADSET
Press to activate the headset
when a corded headset is
connected. SPEAKER
Press to turn the base
speakerphone on or off.
LOWER
Press to enter the lower
locations of the speed dial keys.
(AUTO) REDIAL
Press to dial the last number dialed
when the telephone is off hook.
When the telephone is idle, press to
display the last five numbers dialed.
You can choose to dial a displayed
number or use the auto redial feature.
FLASH
During a call, press to answer an incoming call
when you receive a call waiting alert.
PAUSE
Press to insert a two-second
dialing pause in a number stored
in the directory or speed dial
memory.
DISP DIAL
Press to dial the number
currently displayed.
MUTE
During a call, press to mute the
microphone.
When a call is ringing, press to
mute the ringer.
VOL+
While the telephone is not in
use, press to increase the ringer
volume for both lines.
During a call, press to increase the
listening volume.
During message playback, press to
increase the playback volume.
Speed dial keys
Press to dial or review a stored
speed dial number when the
telephone is idle.

8
The telephone is set to use line 1 by default for making calls. To change
the primary line, see Set the primary line in the user’s manual. When you
answer a call, the telephone automatically selects the ringing line.
Making, answering or ending a call
To make a call with the speakerphone:
Press SPEAKER to use the primary line.
-OR-
To override automatic line selection, press
SPEAKER , then press LINE 1 or LINE 2.
-OR-
If you choose Speakerphone in Choose the
preferred mode (see user’s manual), press
LINE 1 or LINE 2 directly to activate the
speakerphone.
Wait for a dial tone, then dial the telephone
number. The screen displays the elapsed time as
you talk (in hours, minutes and seconds).
Press SPEAKER to hang up.
To make a call with the handset:
Lift the handset to use the primary line.
-OR-
To override automatic line selection, lift the handset, then press LINE 1 or
LINE 2.
Wait for a dial tone, then dial the number.
Place the handset on the telephone base to hang up.
To make a call with the corded headset:
Make sure the corded headset is connected to the telephone base (see
Optional headset in the user’s manual).
Press HEADSET on the telephone base to use the primary line.
-OR-
To override automatic line selection, press HEADSET, then press LINE 1 or
LINE 2.
-OR-
If you choose Headset in Choose the preferred mode (see user’s manual),
press LINE 1 or LINE 2 directly to activate the headset.
Wait for a dial tone, then dial the number.
Press HEADSET to hang up.
1.
2.
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1.
2.
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LINE buttonsLINE buttons
Line 1 0:00:08
888-722-7702
8:00am 1/11
Elapsed time
Line 1 0:00:08
888-722-7702
8:00am 1/11
Elapsed time
Basic operation

9
To answer a call:
Lift the handset, press SPEAKER or HEADSET.
-OR-
Press the LINE button of the ringing line to answer the call with the
preferred mode (see Choose the preferred mode in the user’s manual).
On hook dialing (predialing)
Press the dialing keys to enter a telephone number. Press DELETE to make
corrections when entering the telephone number.
Lift the handset or press SPEAKER or HEADSET.
-OR-
To dial the number using your preferred mode (see Choose the preferred
mode in the user’s manual):
Press DISP DIAL.
Press LINE 1 or LINE 2 to override automatic line selection.
Clearspeak®dial-in-base speakerphone
During a call, presspress SPEAKER , then hang up the handset. This allows you to use
the telephone hands free and lets more people participate in the conversation.
Turn the answering system on or off
By default, the answering system is on and ready to record messages on
each telephone line. When the answering system of the corresponding line
is on, the corresponding /ANS ON/OFF indicator light is on. If you turn the
answering system off, the answering system does not answer calls and record
incoming messages.
Press /ANS ON/OFF LINE 1 or /ANS ON/OFF LINE 2 to turn the
corresponding answering system on or off. When the answering system is
turned on, it announces “Calls will be answered.”
The /ANS ON/OFF LINE 1 or /ANS ON/OFF LINE 2 indicator light
turns on. When the answering system is turned off, it announces “Calls will
not be answered.” The /ANS ON/OFF LINE 1 or /ANS ON/OFF LINE 2
indicator light turns off.
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Clearspeak®is a registered trademark of Advanced American Telephones.
NOTE: To turn the answering system on or off in the menu, see the user’s manual
for instructions.
Basic operation