Nortel Networks NN43001-122 - Manual (Page 11)

Overview 11
Multiple Microsoft Exchange Unified Messaging servers on a single
network
Multiple Servers can be configured for a single network to ensure the
effective handling of potential issues caused by challenges of:
• Capacity: Each Microsoft Exchange Unified Messaging Server is
capable of supporting a maximum of 200 total concurrent (combination
of inbound and outbound) calls. In larger customer networks that need
to support a higher volume of concurrent calls, additional Microsoft
Exchange Unified Messaging Servers can be configured in the same
network so that users can be load-balanced.
• Redundancy: An additional Microsoft Exchange Unified Messaging
Server can be configured as a redundant server in a network by
utilizing the Least Cost Routing Mechanism on the Network Routing
Service (NRS) - configuring an additional Microsoft Exchange Unified
Messaging Server provides a greater measure of fault tolerance for
the services provided, allowing a continuation of those services in the
event of system failure
•
Geographical location: If network systems are located across multiple
geographic locations, Microsoft Exchange Unified Messaging Servers
can be implemented in such a way that they are both local and specific
to each location. Configuring multiple servers in this way would
Nortel Communication Server 1000
Communication Server 1000 with Microsoft Exchange Server 2007 Unified Messaging Fundamentals
NN43001-122 02.04
24 October 2008
Copyright © 2008 Nortel Networks
.