Nortel 1000 Features And Services Fundamentals page 561

A warning tone is available for conference calls. When the option is enabled,
the tone lets callers know that they are entering a conference call. The
switch for this option is preset to disable the warning tone. For information
on the switch settings for the NT8D17 Conference/TDS card, refer to Circuit
Card Reference (NN43001-311).
Feature interactions
500/2500 Line Disconnect
If one of the parties in the conference is connected to a 500/2500 port that is
in turn connected to a Voice Response Unit (VRU), dial tone is provided to
the 500/2500 port when all the other parties in the conference disconnect.
This feature enhancement applies in the same way to Call Transfer and
Hunting.
AC15 Recall: Transfer from Meridian 1
The use of the Conference key does not activate the AC15 Recall: Transfer
from Meridian 1 feature. Conference call is not supported because it is not
possible to have two parties on the same trunk.
AC15 Recall: Timed Reminder Recall
The conference feature is sometimes used to perform a transfer when
a controlling party establishes a call, the controlling party establishes a
conference with a third party and releases, and a call is established between
the two remaining parties.
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.
Copyright © 1994–2008, Nortel Networks
.
Nortel Communication Server 1000
Features and Services Fundamentals — Book 2 of 6 (C)
NN43001-106 02.04 Standard
Release 5.5 9 May 2008
Feature interactions 561