Nortel Networks NN43001-314 User Manual
Page 49
Software requirements
49
Features in mixed-software configurations
Feature operation of IP Phone users in Normal Mode is the feature set on
the main office. IP Phone users in Local Mode use the feature set on the
Branch Office. Users of analog and digital devices always use the feature
set on the Branch Office.
However, be advised that if the Branch Office is running a lower release of
software than the main office, features involving interaction between the
main office and the Branch Office will not function for the Branch Office IP
Phone users. For example, if the main office is on CS 1000 Release 4.5 and
the Branch Office is on CS 1000 Release 4.0 or Succession 3.0, the Active
Call Failover feature and the Enhanced UNIStim Firmware download feature
will not operate for the Branch Office IP Phone users since these features
are not supported on earlier releases. In this case, the Branch Office would
need to be upgraded to CS 1000 Release 4.5 to support these features.
Adding a Branch Office to an existing network
For customers wanting to add a Branch Office to their existing network, with
the introduction of CS 1000 Release 5.0, customers are to order a Branch
Office running CS 1000 Release 4.0 if their main office is running CS 1000
Release 4.0. They are also permitted to order a Branch Office running
CS 1000 Release 4.5 if their main office is running CS 1000 Release 4.5.
However, they will no longer be permitted to order a Branch Office running
on Succession 3.0. This differs from the introduction of CS 1000 Release
4.5, customers which allowed customers to order a Branch Office running
Succession 3.0 software only if their main office is running Succession 3.0
software. They were also permitted to order a Branch Office running on
Succession 3.0 if the main office was running Succession 3.0.
IP Phone firmware
When you add a new CS 1000 Release 5.0 Branch Office to a network that
has CS 1000 Release 4.0 or CS 1000 Release 4.5 branch offices, you must
choose whether to upgrade IP Phone firmware for existing branch offices.
You can choose not to upgrade the IP Phone firmware at the existing branch
offices only if the IP Phones in those branch offices are running at least the
minimum version of firmware as specified in
If you choose to upgrade only the IP Phone firmware, you must upgrade the
IP Phone firmware at the existing branch offices first. The main office may
not require an IP Phone firmware upgrade, depending on its current version.
With the introduction of Enhanced UNIStim Firmware Download feature
for Release 4.5, IP Phone firmware at the Branch Office is automatically
downloaded from the main office.
Nortel Communication Server 1000
Branch Office Installation and Commissioning
NN43001-314
01.02
Standard
Release 5.0
20 June 2007
Copyright © 2007, Nortel Networks
.