Busy Intercom Callback - Iwatsu ICON Series IX-5910 Owner's Manual

Operation
To answer the waiting call:
Hang up on the first call and press the key representing the
waiting call
Or
Press the Call Park key PARK and press the key representing
the waiting call
To alternate between calls:
Press the Call Park key PARK

BUSY INTERCOM CALLBACK

Allows you to instruct the ECS to inform you when a busy extension that
you called becomes idle. When the extension becomes idle, the ECS will
call you back. After you answer, the desired extension will automatically be
dialed. If your phone has a display, the display will inform you that the call
is a Callback and identify the extension. You may leave one Callback
message.
Operation
When you make an intercom call and the extension is busy:
Do not hang up
Press the Feature key FEAT then dial
Or
Press Busy Intercom Callback key ICM CB key if assigned as
a Multipurpose Key and the lamp will be solid red
Wait for a confirmation tone
Hang up
To Cancel all Intercom Callbacks
Press the Speaker key SPKR
Press the Feature key FEAT then dial
Or
Press Busy Intercom Callback key ICM CB if assigned as a
Multipurpose key then dial
Wait for a confirmation tone
Press the Speaker key SPKR
DIGITAL TELEPHONE USER GUIDE - 201
and the lamp will be off