Restriction tables allow you to control which phone numbers subscribers and administrators can use for:
Transferring calls?including both the numbers subscribers can enter for transferring their calls, and the numbers that unidentified callers can enter when using Caller system transfers. Recording and playback by phone from Cisco Unity applications, when the phone is the designated recording and playback device in the Media Master. (The Media Master is available in the Cisco Unity Administrator, the Cisco Unity Assistant, the Cisco Unity Inbox, and ViewMail.)
Delivering faxes to a fax machine.
Sending message notifications.
Sending AMIS messages.
For example, you can specify that subscribers have calls transferred only to internal extensions or that faxes are delivered only to local phone numbers. Restriction tables are applied regardless of how a subscriber or administrator accesses Cisco Unity.