AT&T 1040 Quick Reference Manual page 11

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INTERCOM TO
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Intercom
Use this feature to make calls between system
phones. An intercom call rings at the extension
called with a repeating double-ring pattern.
Make an intercom call with the handset
. If the one-touch preference is set to
INTERCOM, skip to step .
-OR-
If the one-touch preference is set to
TELEPHONE, press [INTERCOM].
. Press the one-touch button for the called
party, then lift the handset. The screen displays
INTERCOM TO and the destination extension
number.
Make an intercom call with the speakerphone
or headset
Use this feature to make an intercom call. With
the handset in the telephone base:
. If the one-touch preference is set to
INTERCOM, skip to step .
-OR-
If the one-touch preference is set to
TELEPHONE, press [INTERCOM]. The phone
automatically turns on the intercom call in
the mode (headset or speakerphone) you
programmed (see the AUTOMATIC MODE
section of your installation guide).
. Press the one-touch button. The screen
displays INTERCOM TO XX and the destination
extension number.
If the extension is idle or set to Do
you hear long beeps. If the other extension is
busy, you hear a busy signal.
NOTE: The intercom call automatically cancels
if you do not press a one-touch button within 0
seconds.
0
Not Disturb,