User`s manual

Chapter 1 - Using the AT-VP504E FXS User’s Manual (SIP/MGCP Version)
AT-VP504E FXS 14
X A wants to terminate the call with C and get back to the call with B
during the conference:
1. A performs a Flash-Hook.
The conference is terminated and the call with C is
disconnected. A and B are still connected and can go on with
their conversation.
X B (or C) hangs up during the conference:
1. B (or C) hangs up during the conference.
The conference is terminated, but the call between A and C
(or B) is not affected and they are still connected.