Cisco Cisco Unified Messaging Gateway Version 8.5 Guía De Información
Q&A
© 2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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Q.
Does the Cisco Unified Messaging Gateway support any failover mechanism?
A.
Yes. The Cisco Unified Messaging Gateway supports 1-1 active-standby failover. Each voice
messaging solution registers with both primary and secondary Cisco Unified Messaging
Gateways if failover is implemented in the network. Failover is not supported with Avaya
Interchange because of Avaya’s product limitations.
Q.
What voice messaging systems and versions does the Cisco Unified Messaging
Gateway support?
A.
The Cisco Unified Messaging Gateway 1.0 supports Cisco Unity 4.0(5) and later in a Microsoft
Exchange environment, Cisco Unity Connection 7.0, Cisco Unity Express 3.1 and later with
autoregistration capability or all previous versions of Cisco Unity Express with manual
registration, and Avaya Interchange Version 5.4.
Q.
What are the advantages of using Cisco Unity Express 3.1 or later in a Cisco Unified
Messaging Gateway network?
A.
The Cisco Unified Messaging Gateway supports autoregistration with Cisco Unity Express 3.1
or later. With autoregistration, in addition to the automatic directory exchange between Cisco
Unity Express and Cisco Unified Messaging Gateways, new telephone user interface (TUI)
prompts and Cisco VoiceView Express interfaces are introduced to enable a “global directory
search” when a local Cisco Unity Express does not have a remote subscriber cached. With
the dial-by-name option, a spoken name can be confirmed across the voice messaging
network.
Q.
What are the differences between the interaction of a Cisco Unified Messaging Gateway
with Cisco Unity Express and with other voice messaging systems?
A.
Cisco Unity unified messaging and other systems need manual provisioning on the Cisco
Unified Messaging Gateway. When failover is applied, these systems need a Domain Name
System (DNS) server to resolve the IP address of Cisco Unified Messaging Gateways. Cisco
Unity Express 3.1 and later autoregistration can be enabled along with directory information
exchange (refer to previous answer for the advantages of Cisco Unity Express 3.1 in a Cisco
Unified Messaging Gateway network). Older versions of Cisco Unity Express need manual
provisioning on the Cisco Unified Messaging Gateway.
Q.
What Cisco IOS
®
Software is required to support the Cisco Unified Messaging Gateway
Module on a Cisco integrated services router?
A.
Cisco IOS Software Release 12.4(15) T or later is required.
Q.
How does the Cisco Unified Messaging Gateway register Cisco Unity Express, Cisco
Unity Connection, Cisco Unity, and Avaya Interchange applications?
A.
The Cisco Unified Messaging Gateway registers Cisco Unity Express either automatically or
manually, depending on the Cisco Unity Express version. For Cisco Unity Express Version 3.1
and later, autoregistration is suggested with username and password authentication. For
versions of Cisco Unity Express prior to 3.1, you can manually register Cisco Unity Express on
the Cisco Unified Messaging Gateway. The same manual registration rule is applicable to the
Cisco Unity, Cisco Unity Connection, and Avaya Interchange applications.
Q.
How do I calculate the capacity and sizing of a Cisco Unified Messaging Gateway
network?
A.
Cisco Unified Messaging Gateway hardware has two versions with different capacities; the
part numbers are NME-UMG and NME-UMG-EC. The first (NME-UMG) can support up to 250
voice messaging systems or nodes; the second (NME-UMG-EC) can support up to 1,000