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Networking Guide for Cisco Unity Release 5.x (With Microsoft Exchange)
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Networking in Cisco Unity

Overview: Networking in Cisco Unity

In Cisco Unity, “networking” is the general term for messaging between Cisco Unity servers, and
between Cisco Unity and other voice messaging systems. The term networking has a broad definition
that encompasses the following ideas:
Subscribers associated with one Cisco Unity server can use the phone to send voice messages to:
Subscribers associated with another Cisco Unity server.
Individuals with access to a computer connected to the Internet.
Individuals who use a voice messaging system other than Cisco Unity.
Unidentified callers can find any subscriber in the phone directory and leave a voice message.
Depending on the phone system and network configuration, unidentified callers who reach the
Cisco Unity automated attendant or directory assistance can be transferred to any subscriber phone,
even to the phone of a subscriber who is not associated with the local server.
See the following sections:
Networking Options, page 1-1
Message Addressing Options, page 1-2
Locations and External Subscribers, page 1-3

Networking Options

The main goal of networking in Cisco Unity is to deliver messages from a Cisco Unity server to a target,
and to deliver messages from the target to Cisco Unity. The networking options available in Cisco Unity
are defined according to a combination of the message transport mechanism and the target, as shown in
Table 1-1.
Tab l e 1-1 Network ing Op tions
Networking Option Description
Digital Networking Allows messaging among multiple Cisco Unity servers connected to a single, global directory.
That is, the Exchange partner servers must be in the same Active Directory forest. Message routing
is done by Exchange.