Lucent Technologies PARTNER Advanced Communications System Release 1.0 Programming And Use Instructions page 198

How to Join a Call
System Phone
A steady red light next to a line button indicates a call is in progress at another
extension.
To join a call:
Press the line button next to the steady red light and lift the handset, or
Lift the handset and press
The red and green lights alternately flash. You are now joined with the
call.
Standard Phone
1. Lift the handset.
You hear intercom dial tone.
6 8
2. Dial
i 6 8
and the number of the line on which the call is being conducted.
and the two-digit line number.
Joining Calls
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