Main and branch office running different releases – Nortel Networks NN43001-314 User Manual
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Overview
Main and Branch Office running different releases
The Main Office Call Server and the Branch Office can have different
software releases, as long as the Main Office runs at the highest release.
With the introduction of CS 1000 Release 5.0 program, Nortel’s policy
will be if the main office Call Server is running CS 1000 Release 5.0, the
Branch Office can run on CS 1000 Release 5.0, CS 1000 Release 4.5, or
CS 1000 Release 4.0.
Some functionality found in CS 1000 Release 5.0 is not available in earlier
releases. For example, CS 1000 Release 4.0 does not support Active Call
Failover
It is recommended that the software release on the Branch Office always
match the software release on the main office. In addition, it is possible to
have branch offices running different software releases.
Take into consideration planning your upgrade with this mixed software
policy. Customers must ensure their Branch Offices are at CS 1000 Release
4.5 or CS 1000 Release 4.0 prior to upgrading the main office to CS 1000
Release 5.0 to ensure a supported configuration during the upgrade period.
Both the Call Server and Signaling Server in the main office must run the
same release of software.
If the NRS at the Branch Office is also the Alternate NRS in the network,
then both it and the Primary NRS must be running the same software
release.
This capability is required to support customers who are currently running a
network of CS 1000 Release 4.0 or CS 1000 Release 4.5 branch offices
with a CS 1000 Release 5.0 main office, and who want to add one Branch
Office running CS 1000 Release 5.0. By allowing this mixed-software
operation, customers do not have to upgrade their entire network from a
CS 1000 Release 4.0 or CS 1000 Release 4.5 to CS 1000 Release 5.0 at
the same time.
If the Branch Office is running CS 1000 Release 4.0 or CS 1000 Release
4.5, you do not have to upgrade the Branch Office to CS 1000 Release 5.0.
Indefinite operation with a mixed-software configuration of CS 1000 Release
4.0 and CS 1000 Release 4.5 branch offices and a CS 1000 Release 5.0
main office is supported.
For information on upgrading software, refer to
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314
01.02
Standard
Release 5.0
20 June 2007
Copyright © 2007, Nortel Networks
.