Nortel ICS Install Manual page 165

Breaking into a Norstar call path
Telephone B
Norstar
Break-in path
Only post-dial break-in is supported by MCDN:
1. Attendant dials destination number.
2. If a busy tone is heard, the attendant presses the BKI
button.
Attendant is given access to the conversation.
You can set a level of priority that will determine if a telephone
will allow an attendant to break in. This is referred to as setting
the Intrusion level.
How the intrusion hierarchy works:
• Break-in is allowed if Attendant telephone is High and
caller telephone is Medium.
• Break-in is not allowed if Attendant telephone is Medium
and caller telephone is High.
N0130943 02
Private networking using PRI SL-1 / 165
Meridian 1
Telephone A
(rings busy)
Attendant
Incoming call
for Telephone A
Modular ICS 7.1 Installer Guide