Cisco Cisco Unified Messaging Gateway Version 8.5 Guide D’Information
Q&A
© 2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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Cisco Unified Messaging Gateway
Q.
What is the Cisco
®
Unified Messaging Gateway?
A.
The Cisco Unified Messaging Gateway is a software-based network module for Cisco
integrated services routers. It acts as the central hub for Cisco Unity
®
, Cisco Unity
Connection, and Cisco Unity Express applications in unified messaging solutions to provide
intelligent routing for voice messages. Within a voice messaging network, the Cisco Unified
Messaging Gateway exchanges subscriber and directory information among the Cisco voice
messaging solutions and provides interoperability with third-party voice messaging systems
over Voice Profile for Internet Mail (VPIM) networks.
Q.
Why introduce the Cisco Unified Messaging Gateway into a voice messaging network?
A.
Cisco Unity Express currently provides a networking function for message exchange between
users of different Cisco Unity Express nodes. A networked Cisco Unity Express setup requires
all Cisco Unity Express nodes to form a fully meshed network, within which each Cisco Unity
Express node must be able to reach all other Cisco Unity Express nodes directly. This
approach carries limitations on scalability and manageability because the Cisco Unity Express
network scales up to a limit of 500 nodes. With a Cisco Unified Messaging Gateway network,
the voice messaging network can scale up to 20 Cisco Unified Messaging Gateways (10
primary + 10 secondary) with 500,000 subscribers on up to 10,000 nodes of any combination
of Cisco Unity Express, Cisco Unity Connection, and Cisco Unity solutions.
Q.
What are the major features and functions of the Cisco Unified Messaging Gateway?
A.
Cisco Unified Messaging Gateway 1.0 supports voice messaging system registration
(including Cisco Unity Express, Cisco Unity Connection, Cisco Unity, and Avaya Interchange
applications) and autoregistration with Cisco Unity Express Version 3.1 and later, directory
information exchange, message routing, and delivery, including System Distribution Lists
(SDLs) and System Broadcast Messages (SBMs), multiple messaging formats, and dial by
name with spoken-name confirmation across a network with many Cisco Unified Messaging
Gateways.
Q.
What is a typical deployment of the Cisco Unified Messaging Gateway?
A.
The Cisco Unified Messaging Gateway solution deployment options include:
●
Medium- to large-scale with Cisco Unity Express-only deployment (more than 5 Cisco Unity
Express systems and up to 10,000 with a networked offering)
●
Medium- to large-scale with mixed Cisco Unity Express, Cisco Unity Connection, and Cisco
Unity solutions
●
Medium- to large-scale with mixed Cisco Unity Express, Cisco Unity Connection, Cisco
Unity, and third-party (Avaya Interchange) voice messaging systems (VPIM)
Q.
What type of network topology does the Cisco Unified Messaging Gateway support?
A.
Cisco Unified Messaging Gateways interact with nodes on a hub-and-spoke topology and are
fully meshed among themselves, with up to 20 Cisco Unified Messaging Gateways in the
network (10 primary + 10 secondary).