Cisco Systems OL-14619-01 manual Some Configuration Settings Are Stored in the Registry

Chapter 2 Cisco Unity Concepts

Where Cisco Unity Stores Data

Because this information can be stored and changed in multiple locations, it must be regularly synchronized. Cisco Unity includes separate directory monitors for Domino and for Active Directory that keep the directory synchronized with the SQL Server 2000 database. Every few minutes, the directory monitor checks for new, changed, and deleted objects, and replicates the information.

When two or more Cisco Unity servers are added to the same Active Directory forest, a global catalog monitor keeps the SQL Server 2000 database synchronized with the global catalog. This is how each Cisco Unity server gathers information on subscribers who are associated with other Cisco Unity servers.

Because the amount of data stored in the directory is so small, the impact of replication between the SQL Server 2000 database and the directory is minimal (except when the first Cisco Unity subscribers are created by importing them in bulk from Exchange or from a text file).

Messages from Outside Callers Are Temporarily Stored on the Cisco Unity Server

All messages from outside callers are temporarily stored on the Cisco Unity server before they are forwarded to Domino or Exchange for storage in the subscriber mailbox. This allows Cisco Unity to continue functioning when the network connection between the Cisco Unity server and the Domino or Exchange servers is down, or when one or more Domino or Exchange servers are down.

While Domino, Exchange, and/or the network is offline, Cisco Unity can still answer calls, allow outside callers to look up subscriber extensions, and record voice messages. During this time, subscribers who check their voice messages hear the Unity Messaging Repository (UMR) conversation, which explains that their Domino or Exchange server is not available, but lets them access voice messages left after the problem started. When the Domino server, Exchange server, and/or the network is back on line, the voice messages that were stored in the UMR are routed to the subscriber mailboxes. (In some cases when a network connection or a Domino or Exchange server is down, subscriber-to-subscriber messages are also treated as outside caller messages and stored on the Cisco Unity server until they can be delivered to the appropriate mailbox.)

Some Subscriber Information and Configuration Settings Are Stored on the Cisco Unity Server

Selected recordings and configuration settings are stored in files on the Cisco Unity server, including subscriber greetings (“Hi, this is Pat and I am out of the office today...”), recorded voice names, and some phone system integration settings.

Some Configuration Settings Are Stored in the Registry

Selected server-specific configuration settings are stored in the Windows registry, including some phone system integration and logging settings.

	Design Guide for Cisco Unity Release 5.x
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