Panasonic 2001 - Manual (Page 39)

While on an active call
39
To activate Call Trace:
1. Choose one of the following:
— Press the
Transfer
soft key.
— Press the
Conference
soft key.
2. Dial the
SPRE code
followed by
83 or
enter the
Call Trace
FFC to
automatically reconnect.
Note: Contact your system administrator
for the Call Trace feature SPRE code.