Implementing Cisco Collaboration Devices (CICD, legacy) — Question 49

Company A merged with company B. An engineer is asked to register some IP phones from company B to Cisco Unified Communications Manager of company A.
The engineer correctly added the devices in Cisco Unified CM and the network parameters for the IP phone are correct, but the IP phone is not registering. Which action resolves this issue?

Answer options

• A. Erase CTL configuration.
• B. Configure H.323.
• C. Change the device template.
• D. Enable SIP Proxy. B

Correct answer:

Explanation

The correct answer is D, as enabling SIP Proxy allows the IP phones to communicate properly with the Cisco Unified Communications Manager. Option A is incorrect because erasing CTL configuration does not directly address registration issues. Option B is wrong since configuring H.323 is not necessary if SIP is being used. Option C may change device behavior, but it does not specifically resolve registration issues.