- Nortel Communication Server IP Phone 2007 User Guide

While on an active call
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Displaying incoming calls
Use the Display feature to display a second incoming caller’s number and
name (if available) during an active call, without interfering with the call in
progress.
To view the information about an incoming call while on a call in
progress:
Tracing a malicious call
Use the Call Trace feature to trace nuisance calls within your system.
Note: This is not a default feature. Contact your system administrator
to configure this feature on your phone.
To use Call Trace while on a call:
1. Tap the Display soft key.
2. Tap the flashing line (DN) soft key. The
call waiting information appears.
Note: When used with other feature soft
keys, the Display soft key displays
information associated with those
feature soft keys.
Tap the Call Trace soft key.