Nortel Networks NN-10300-014 - Manual (Page 47)

While on an active call
47
To activate Call Trace:
1. Press the Transfer (Trans) key or the
Conference (Conf) key.
2. Dial the Special Prefix (SPRE) code
followed by 83 or enter the Call Trace
FFC to reconnect automatically.
Note: Contact your system administrator
for the Call Trace feature SPRE code.
or