An engineer is configuring toll fraud prevention on a Cisco Unity Connection system. The Unity Connection system is integrated with two phone systems each with its own trunk access code Which figuration blocks attempts to bypass the restriction table by dialing trunk access codes?

Cisco Unity Connection evaluates the entire string of digits a user dials against the patterns in the applicable restriction table. To prevent toll fraud where a user dials a trunk access code (e.g., '9') followed by a restricted number (e.g., an international number), the restriction table pattern must include the trunk access code itself. For a system with two phone integrations, patterns must be created for each respective trunk access code (e.g., 9011 and 8011) to effectively block such calls. This ensures that any attempt to dial out using a known trunk access code is matched and subjected to the configured restrictions.

B. This is a general function of restriction tables but does not address the specific problem of handling trunk access codes in the dialed string.
C. This describes a specific blocking rule (a policy), not the fundamental configuration method required to make the rule effective when a trunk access code is used.
D. Similar to C, this is a common policy but fails to explain the mechanism needed to enforce it when calls are prefixed with a trunk access code.

1. Cisco Unity Connection System Administration Guide

Release 12.x

Chapter: "Managing Restriction Tables in Cisco Unity Connection

" Section: "Restriction Tables."

This guide states

"When a user attempts to transfer a call... Unity Connection compares the phone number that the user enters with the patterns in the restriction table..." This confirms that the entire dialed string

including any manually dialed trunk access code

is evaluated

necessitating patterns that match the code.

2. Cisco Unity Connection Security Guide

Release 12.x

Chapter: "Preventing Toll Fraud

" Section: "Configuring Restriction Tables to Prevent Toll Fraud."

This section details best practices for configuring restriction tables. The principle is to create patterns that match number sequences known to be associated with toll fraud. For this to be effective

the patterns must reflect the actual digits dialed by the user

which includes any trunk access codes. For example

to block international calls where the access code is '9'

a pattern like 9011# is required.