An engineer is configuring toll fraud prevention on a Cisco Unity Connection system. The Unity Connection system is integrated with two phone systems…

Toll fraud prevention on Cisco Unity Connection often involves restriction tables, which define

patterns of phone numbers that are allowed or disallowed. To prevent users from dialing out using

trunk access codes and potentially making unauthorized long-distance calls, here's the logic:

Identify trunk access codes: Determine the specific codes that allow external calls on each phone

system. These are often single-digit codes like "9".

Add patterns to restriction tables: Within the Cisco Unity Connection restriction tables, create

patterns that block any number starting with the trunk access code for each respective phone

system.