Chapter 3 Network Infrastructure Requirements
Availability of Network Resources
•Administrators access the Cisco Unity Administrator from other servers, which is primarily done when using the administrative web interfaces. Typically, if a server name is used instead of an IP address, the server name must be resolved to an IP address before access can occur over the network.
•Subscribers access the Cisco Unity Assistant or the Cisco Unity Inbox. Typically, if a server name is used instead of an IP address, the server name must be resolved to an IP address before access can occur over the network.
The Cisco Unity server must use Dynamic DNS (DDNS) or another version of DNS that supports dynamic updates as described on the Microsoft website. Simply creating a host file on the Cisco Unity server is not sufficient.
When Domino is the message store, note the following:
•If Notes clients are using Notes Name Resolution, Cisco Unity must also use Notes Name Resolution through the Notes client that is installed on the Cisco Unity server. DDNS is required on the Windows domain controller in the domain to which the Cisco Unity server belongs.
•You can install the Windows DNS service on the Cisco Unity server in either a Unified Messaging or a Voice Messaging configuration. With Domino, the Cisco Unity server is configured as a Windows domain controller to service Domino Notes clients via DUC. This is a Cisco Unity requirement, not a DUC requirement. The Cisco Unity server supports its own dedicated domain for Domino.
When Exchange is the message store, note the following:
•The DDNS server must be accessible by Cisco Unity and the supporting Exchange servers.
•In a Voice Messaging configuration with failover, install the Windows DNS service on the Cisco Unity secondary failover server or on a dedicated DC/GC server.
•In a Voice Messaging configuration without failover, when the Cisco Unity server is a Windows domain controller and all other servers in the domain are Exchange servers that are used only to support Cisco Unity, install the Windows DNS service on the Cisco Unity server. In this configuration, the Cisco Unity server supports its own dedicated domain for Exchange.
•In a Unified Messaging configuration when Exchange is the message store, do not install the Windows DNS service on the Cisco Unity server.
Domain Controller Access and Availability
For all configurations and all message stores, Cisco Unity must have access to a Windows domain controller to authenticate service accounts and, when Exchange is the message store, to authenticate subscribers.
When Domino is the message store, subscribers can be authenticated for
Cisco Unity by using either Windows authentication or Domino authentication; Domino authentication does not require access to a Windows domain controller.
Availability of Message Store Servers
When Cisco Unity is installed, the installer specifies one Domino or Exchange server that Cisco Unity connects with; this is known as the partner Domino server or the partner Exchange server. The partner server is the home of the Cisco Unity system mailbox (alias: Unity_<ServerName>. The Unity system mailbox is the mailbox that originates voice messages from outside callers. The partner server is also the home for default mailboxes and distribution groups (Cisco Unity distribution lists) that are created
Design Guide for Cisco Unity Release 5.x
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