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Design Guide for Cisco Unity Release 5.x
OL-14619-01
Chapter 2 Cisco Unity Concepts
Hardware Components of a Cisco Unity System
information). All voice cards must be installed in the expansion chassis; they cannot be split between the
server and the expansion chassis, because all of the cards must be connected to one another by using a
single H.100 cable.
One or More Message-Store Servers (Optional for Some Configurations)
For Cisco Unity systems configured for Unified Messaging, the message store software (IBM Lotus
Domino or Microsoft Exchange) must be installed on a server other than the Cisco
Unity server.
For Cisco Unity systems configured for Voice Messaging, Exchange can be installed on the Cisco Unity
server or on a separate server. Domino must be installed on a separate server.
The number of subscribers homed on the Cisco Unity server cannot exceed the maximum listed for that
type of server on the Cisco
Unity Supported Platforms List at
http://www.cisco.com/en/US/products/sw/voicesw/ps2237/products_data_sheets_list.html.
One or More Dedicated Domain Controllers/Global Catalog Servers (Exchange
Only, Large Voice Messaging Configurations Only)
For large Voice Messaging configurations, one or more dedicated domain controllers/global catalog
(DC/GC) servers may be required. For more information, see
Chapter 3, “Network Infrastructure
Requirements.”
Cisco Unity Bridge Server (Required Only for Interoperating with Avaya Voice
Messaging Systems)
If the customer wants Cisco Unity to interoperate with an Avaya voice messaging system, a dedicated
Cisco
Unity Bridge server is required. For more information, see the following documents:
• For information on how Cisco Unity can send voice messages to Avaya and receive voice messages
from Avaya, see the applicable version of the Networking Guide for Cisco
Unity Bridge at
http://www.cisco.com/en/US/products/sw/voicesw/ps2237/products_feature_guides_list.html.
• For requirements for connecting Cisco Unity and Avaya, see the System Requirements, and
Supported Hardware and Software for Cisco
Unity Bridge at
http://www.cisco.com/en/US/products/sw/voicesw/ps2237/prod_installation_guides_list.html.
Network Connection (Optional for Some Configurations)
For Cisco Unity systems that are configured for Unified Messaging, a network connection is required.
For Cisco Unity systems that are configured for Voice Messaging, a network connection is required only
if the customer wants to do one or more of the following:
• Use Domino for the message store.
• Integrate Cisco Unity with an IP phone system (for example, Cisco Unified Communications
Manager).
• Administer Cisco Unity over the network.