AT&T 2820 - Manual (Page 31)

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4. ‘REGISTERING’ appears instead of you will see the message. Press
and hold the PAGE key on the cradle of the base unit. This may take
up to a minute.
5. ‘REGISTRATION ACCEPTED’ indicates that handset is registered.
‘RETRY?’ indicates that registration has failed. Touch
to
retry or to quit.
NOTE: The base unit will then send a signal to the handset registering
the handset to the base unit. Once the Registration function has been
completed, the handset will return to Standby Mode.
To de-register a handset:
1. Touch and select the Security Set menu > Deregistration.
2. Use or to select the handset number for deregistration.
3. Touch to confirm. Wait for handset to deregister from the base
unit.
4. ‘DEREGISTRATION ACCEPTED’ indicates that handset is
deregistered.
1. Touch and select the Intercom Call menu.
2. Use and to select a handset and touch or dial the
handset number you wish to call.
NOTE: Intercom calls are answered identically to external calls (see the
section in this manual titled BASIC FUNCTIONS on Page 10). If an
external call is received during an intercom call, touch
to terminate
the intercom call. The external ringer will then sound and the external call
can be answered by pressing
.
To transfer a call to another handset:
1. Touch during a call.
USING THE INTERCOM FUNCTION
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