Nortel Networks NN43001-314 - Manual (Page 129)

Description 129
• Branch Office calls to or from another Branch Office controlled by the
same main office
The term "Branch Office" refers to Media Gateway 1000B (MG1000B) and
Survivable Remote Gateway (SRG) systems in this document.
This feature enables alternate routing to occur for Branch Office users
registered to the main office, when they place inter-zone, station-to-station
calls to main office stations or Branch Office stations.
The Alternative Call Routing for NBWM feature can be triggered by
operation of either of the following features:
• NBWM
• Adaptive Network Bandwidth Management
For more information on Network Bandwidth Management and Adaptive
Network Bandwidth Management, refer to IP Peer Networking Installation
and Commissioning (NN43001-313) .
The Alternative Call Routing for NBWM feature can be implemented to
operate in one of the following two ways:
• Bandwidth insufficiency: Alternately routes station-to-station IP network
calls that encounter lack of bandwidth or poor QoS in the originating or
terminating zone as the calls are being established
• All Calls: Alternately routes station-to-station IP network calls,
regardless of available bandwidth
Configure one of these two modes of operation (Bandwidth insufficiency or
All Calls) on a zone basis.
The Alternative Call Routing for NBWM feature deals only with interzone
calls. This feature is configurable for main office and Branch Office zones,
not virtual trunk zones.
It is possible to configure this feature to re-route all calls to MCDN or PSTN
routes and still maintain the main office-Branch Office architecture.
ALTPrefix
When the Alternative Call Routing for NBWM feature is invoked, the dialed
number is modified with a prefix (called the ALTPrefix) inserted at the
beginning of the digit string. The ALTPrefix can have a maximum of seven
digits.
The system handles the call with the ALTPrefix inserted as if the user had
dialed the digits.
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314 01.02 Standard
Release 5.0 20 June 2007
Copyright © 2007, Nortel Networks
.