1.3 Telephone Features and Operation
Operating Manual 59
To join an intercom call
To join an outside call
• To join another conversation, you must have Executive Busy Override enabled at your 
extension. For more details, refer to the Feature Manual.
• It is possible for an originating extension to leave a three-party conversation with an outside 
party and let the two other parties talk by simply going on-hook.
Enter 3.
3
PT/SLT/PS
Talk.
C.Tone
During a conversation
C.Tone
Talk.
A three-party conversation
is now established.
   Parties in the conversation
   Party joining the call
Off-hook.
B. Tone
Dial extension number.
extension no.
Off-hook. Press 
corresponding 
CO
.
Enter 
3
.
PT/PS
Talk.
3
B. Tone C.Tone
   Parties in the conversation
   Party joining the call
During a conversation
C.Tone
Talk.
A three-party conversation
is now established.
(CO)