Nortel Networks NN43001-314 - Manual (Page 168)

168 How the Branch Office feature works
The conferencing feature for MG 1000B systems supports up to 30 parties
with the addition of the MGC as the gateway controller for the MG 1000B.
In a CS 1000E system, the MGC acts as the controllers for the MG 1000Bs:
• If you configure a conference loop in LD 17 on any MGC-based MG
1000Bs, the maximum number of parties for any conference on the
system is six. This is the CS 1000 Release 5.0 limit due to the Call
Server hardware.
• If you configure no conference loops in LD 17 on any MGC-based MG
1000B’s, the maximum number of parties for all conferences on the
system is 30, if you configure the conference loops for the MGC-based
MG 1000Bs in the system. This is introduced in CS 1000 Release 5.0
with the MGC hardware.
Group Call
With the new conference capabilities on the MGC, the Group Call feature
available in CS 1000 Release 5.0 on CS 1000B is enhanced. The number
of group members increases from six to 20.
If the MG 1000B system has a MGC as the controller for the MG 1000Bs,
the maximum number of group members (and member DNs in a call)
remains at 6.
Local Mode operation
Also see "Survivability" (page 50) .
Survivability of IP Phones
If the MG 1000B IP Phone loses communication with the main office, the
Call Server in the MG 1000B Core provides the call processing for the
telephone. While the MG 1000B IP Phones are being provided with service
at the Branch Office, the telephone display shows "Local Mode".
When an MG 1000B telephone is in Local Mode, the user has full access to
services configured at the Branch Office (analog or digital devices, analog
or digital trunks) and to other IP Phones registered to the MG 1000B Call
Server. With proper ESN configuration, the Branch User can also access
IP Phones at the main office or other branch offices by routing through
the local PSTN.
ATTENTION
IMPORTANT!
When a telephone or trunk in the main office calls an MG 1000B IP Phone in Local
Mode, the call is treated according to the main office call redirection configuration
(such as forwarding to voicemail or continuous ringback).
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
Copyright © 2007, Nortel Networks
.