Using Callback - Northern Telecom Compact ICS 4.0 Manual

96 / Transferring calls
Parking full
For other displays, see ''Common feature displays'' on page 215.

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.
Compact ICS 4.0 System Coordinator Guide
All available retrieval codes are in use.
Transfer the call or take a message instead.
P0881596 Issue 02