Implementing Cisco Advanced Call Control and Mobility Services (CLACCM) — Question 62

An engineer has temporarily disabled toll fraud prevention for SIP line calls on a Cisco CME12.6x and must enforce security and toll fraud prevention for the SIP line side on Cisco Unified CME. Which configuration must be used to start this process?

Answer options

• A. voice service voip enable ip address trust list
• B. voice service voip ip address trusted list
• C. voice service voip ip address trusted authenticate
• D. voice service voip enable ip address trust authentication

Correct answer: C

Explanation

The correct answer is C because the 'ip address trusted authenticate' command specifically enables the authentication of trusted IP addresses, which is essential for enforcing toll fraud prevention. Options A and D do not correctly configure the necessary authentication, and option B lacks the required 'authenticate' keyword, making it insufficient for security enforcement.