Instruction manual

Page 1166 of 3156 Conference
553-3001-306 Standard 10.00 January 2002
If an established call is extended over a trunk to initiate a conference call, this
conference call cannot be set up if this trunk has answer supervision and the
called extension has not answered. The AC15 Timed Reminder Recall feature
cannot be activated by using the conference feature to extend a call over an
AC15 TIE trunk, because the AC15 TIE trunk must have answer supervision
and the called extension must be ringing.
AC15 Recall: Transfer from Norstar
It is not possible in any situation with Transfer from Norstar to establish a
three-party conference. It is not possible for an AC15 trunk to initiate a
consultation if it is involved in a conference.
Advice of Charge for EuroISDN
If a set is participating in a conference, no charge is displayed for that set.
Whenever an ISDN CO trunks that provides Advice of Charge (AOC) is
added to a conference, the call charging information, received from the
network, accumulates against the set that initiates the call.
Once the last set involved in a conference call disconnects, a search is made
of all trunks remaining in the conference call to determine which trunk has
been established in the call for the longest period of time. This trunk becomes
the chargeable TN. Once this trunk disconnects, the process is repeated so a
new chargeable TN can be located.
Attendant Barge-In
Attendant Busy Verify
Conference Control cannot be activated if an attendant has used Barge-In or
Busy Verify during a conference that involves a trunk.
Attendant Break-In
If the attendant cannot break in to a conference call because the call is
supporting the maximum number of callers, busy tone continues and the
Break-In key lamp flashes.