Nortel Networks NN43110-101 - Manual (Page 65)

To answer a group call:
Talking with more than one person
1. Lift the handset. Note the following about
notification tones:
— If you are on a call and receive three
10-second tones, this is the
notification of a group call on your
current extension.
— If you are on a call on another line
when a group call is made, you
receive a long tone through the
handset or speaker.
— If you are already on a conference
call or another group call, you do not
receive notification of a group call.
To end a group call:
(Goodbye)
Press the Goodbye key.
Note: When the person who made the
group call disconnects, the call
terminates for all members of the group.
However, the members of the group call
can disconnect from the call and not
affect other members on the call.