Using Callback - Norstar Compact ICS 6.0 Manual

Using Callback

When you direct a call you have answered to another telephone, the system
monitors the call to make sure it is answered. If no one answers the call
within a set length of time, the system directs it back to you.
Callback generates a variety of displays. Most occur after a set delay and
are listed in the index. Some occur immediately if the telephone to which
you are directing a call is out of service or otherwise unavailable. These are
listed with the descriptions of the specific features like Transfer or Camp-
on.
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Transferring calls / 105
Compact ICS 6.0 System Coordinator Guide