Nortel Networks 1000M - Manual (Page 318)

318 Survivability
Voice Gateway Media Cards in survivable Small Systems
This section describes certain aspects of VGMC configuration that are
specific to survivable IP expansion. For more information about configuring
Voice Gateway Media Cards and the IP Line application in Small Systems,
refer to
"Voice Gateway Media Card configuration" (page 263) .
When distributing VGMCs across different IP Expansion Cabinets or
Chassis, the IP Expansion Cabinets or Chassis can be configured to each
have their own node or to belong to the same node. If the IP Expansion
Cabinets or Chassis are NOT in the same location as the Main Cabinet or
Chassis, then each IP Expansion Cabinet or Chassis must have its own
node.
This is related to which survival IP address is configured on the VGMCs:
• For a remote location, the survival IP address of the VGMCs on that
node = the IP address of the SSC on that node.
• For the same building, all survivable IP addresses on VGMCs are
configured to the IP address of only one IP Expansion Cabinet or
Chassis.
There are two survivable mode options:
1. IP Expansion Cabinets or Chassis in separate nodes for VGMCs
(mandatory if IP Expansion Cabinets or Chassis are in a different
location from the Main Cabinet or Chassis)
• Trunks and gateway channels are available in all IP Expansion
Cabinets or Chassis.
• More administration is required as there is more than one node to
manage.
• If the VGMC fails, IP Phones can register to another VGMC only if it
is contained within that particular IP Expansion Cabinet or Chassis.
• Users cannot make IP Phone calls from one IP Expansion Cabinet
or Chassis to another.
2. IP Expansion Cabinets or Chassis in the same node for VGMCs
• Trunks and gateway channels only available for IP Phones on one IP
Expansion Cabinet or Chassis but can be used by all VGMCs.
• Less administration as there is only one node to manage.
• If the VGMC fails, IP Phones can register to other VGMCs (in
different IP Expansion Cabinets or Chassis).
• Users can make IP Phone calls from one IP Expansion Cabinet or
Chassis to another.
Nortel Communication Server 1000
Communication Server 1000M and Meridian 1 Small System Installation and Commissioning
NN43011-310 01.04 Standard
Release 5.0 13 May 2008
Copyright © 2008, Nortel Networks
.