AT&T SB67138 - Manual (Page 56)

Telephone base operation
Intercom
50
You can use the intercom feature for conversations between the telephone
base and an accessory device, or between two accessory devices. When the
system is on one or more external calls, accessory devices can make intercom
calls with each other. If you have a cordless headset, it can only receive
intercom calls.
Each device that is registered to the telephone base is assigned an extension.
Extension numbers are assigned in sequential order (0-9) as they are added.
If you register a cordless headset, it is always assigned extension number 0.
See pages 10-12 for information on adding and registering devices to your
telephone base.
NOTE: A telephone base connected to AC power but not to any telephone lines can still
intercom with charged and registered accessory cordless accessory.
Make an intercom call to a cordless handset/deskset
Press the one-touch
EXT 1-0 key for the destination extension or press the
INT/PTT ALL key, then lift the handset. The screen
displays
Calling X:Handset X (X represents the extension
number [ 1-0], Handset X represents the handset name),
Calling X:Deskset X (X represents the extension number
[
1-0], Deskset X represents the deskset name) or
Calling All.
-OR-
Press INT key on the telephone base, then scroll to the
destination extension. Press
MENU/
ENTER.
NOTES:
Before the intercom call is answered, you can cancel the intercom by pressing SPEAKER, lifting
and resetting the handset, or by pressing the corresponding LINE 1-LINE 4 to resume a call.
The intercom call automatically cancels if the call is unanswered after one minute.
Press
MUTE to temporarily silence the intercom ringer.
When you choose All in the menu, all the extensions and the telephone base ring. The intercom
call is established with the first extension to answer the call.
If a line is in use, pressing INT places the line on hold and activates the intercom.
1.
2.
3.
4.
5.
Handset 1
Deskset 2
Handset 3 >
Intercom to:
Calling
1:Handset 1