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8-1
Networking Guide for Cisco Unity Release 5.x (With Microsoft Exchange)
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8
Using VPIM for Networking with Cisco Unity Express or Other Cisco Unity Systems
For the most part, configuring VPIM Networking for messaging between Cisco Unity systems, and
between Cisco Unity and Cisco Unity Express, is the same as between Cisco Unity and a third-party
voice mail system. For example, VPIM Networking can be used for messaging in the following cases:
Between Cisco Unity systems where the partner Exchange servers are in different Active Directory
forests.
Between Cisco Unity with Exchange 2000 or Exchange 2003 and Cisco Unity with Domino.
Between Cisco Unity and Cisco Unity Express.
However, there are some special considerations that you should be aware of when configuring VPIM
Networking for messaging between Cisco Unity systems.
See the following sections for details:
Messaging Between Cisco Unity Servers in Different Directories, page 8-1
Messaging Between Cisco Unity and Cisco Unity Express Servers, page 8-6
Additional Functionality, page 8-7

Messaging Between Cisco Unity Servers in Different

Directories

Generally, when setting up VPIM Networking for Cisco Unity servers in different directories, you
configure the Cisco Unity servers just as you would for VPIM Networking with any other voice
messaging system. However, there are some settings that need to be coordinated between the
Cisco Unity servers, as explained in the following sections:
Correspondence Between Locations, page 8-2
VPIM Subscribers Correspond to Remote Cisco Unity Subscribers, page 8-2
Audio Format Conversion Settings, page 8-3