Instruction manual

China – Supervised Analog Lines Page 1021 of 3156
Features and Services
Conference
If a terminal device answers an incoming call and then initiates a conference,
no battery reversal answer supervision signal is extended to the terminal
device when new parties of the conference answer. However, a hook flash
disconnect supervision signal is extended to the terminal device when the last
party in the conference disconnects.
If a terminal device initiates a conference, battery reversal answer supervision
is extended to the terminal device when the first party answers. No polarity
change is made when additional parties are added to the conference. The
polarity is reverted to normal when the terminal device disconnects or when
the last party in the conference disconnects.
Multi-Party Operations
As in the cases with Call Transfer and Conference, the call type of the first
active call determines whether battery reversal or hook flash supervision
applies. Also, supervision signaling is not supported for the second call. A
disconnect supervision signal is extended only when the last party
disconnects.
Feature packaging
This feature is included in base X11 System Software
Feature implementation
Task summary list
The following is a summary of the tasks in this section:
1 LD 10 – Enable battery reversal supervision.
2 LD 10 – Enable hook flash disconnect supervision..