Switchable Data Port; Headset Jack - AT&T 992 User Manual

0992_CIB_1ATT_FINAL_022105 2/22/04
Wall Installation
continued from page 9
5 Connect the line cord(s) to the telephone and your
modular wall jack(s).
• If you have a single two-line wall jack, use only the short
line cord. Plug one end into the jack labeled L1 OR L1/L2
on the back of the telephone. Place the cord in the channel
under the phone as shown. Plug the other end into the wall
jack. Make sure the cord snaps firmly into place. Then, place
the phone on the wall jack mounting studs and pull down until
it is held securely.
• If you have two separate one-line wall jacks, use two
line cords (the short cord and one of the long cords). Plug one
end of the short cord into the jack labeled L1 OR L1/L2 on
the back of the telephone. Plug one end of a long cord into the
jack labeled L2 on the back of the phone. Place the cords in
the channels under the phone as shown. Plug the free end of
the line cord for Line 1 into the Line 1 wall jack. Plug the free
end of the line cord for Line 2 into the Line 2 wall jack. Make
sure the cords snap firmly into place at both ends. Then, place
the phone on the Line 1 wall jack mounting studs and pull until
it is held securely.
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4:46 PM Page 10
Two-line
modular
wall jack
Modular
wall jack
for Line 1
Modular
wall jack
for Line 2
6 Plug the power adapter into an AC outlet not controlled by
a wall switch.
7 Follow Steps 5 and 6 in "Table/Desk Installation" on page 8.

Switchable Data Port

If you want to connect another device (such as a modem or fax machine)
to the wall jack, you can use the jack labeled DATA on the phone. You
can set the data port to use Line 1 or 2. Set the DATA SELECT switch
located on the back of the phone to L1 or L2. A call picked up at another
extension on the line used by the data port may interrupt a fax, modem or
message transmission.
Data port

Headset Jack

NOTE: A 9V alkaline battery MUST be installed for the headset to work
correctly in all conditions.
You can use this phone hands-free when you install any AT&T two-band
2.5 mm headset, or other compatible, electronically isolated headset.
Headsets must be purchased separately and are available by calling Customer
1 800 222–3111.
Service at For best results use an AT&T two-band
2.5 mm headset.
Make sure the headset is firmly plugged into the headset jack under the
rubber flap on the right side of the phone. You will hear an error tone if
you press h when the headset is not plugged in.
DATA SELECT
switch
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