Implementing Cisco Advanced Call Control and Mobility Services (CLACCM) — Question 114

An engineer is implementing survivability for a collaboration environment. The environment is utilizing a centralized Cisco UCM at the headquarters and Cisco IOS-XE gateways in the remote branches. Which action must the engineer take to enable both shared lines and B-ACD for SIP branch phones during a WAN outage?

Answer options

• A. Configure mode esrst under voice register global configuration mode.
• B. Configure mode srst under telephony-service configuration mode.
• C. Configure mode esrst under voice service voip configuration mode.
• D. Configure mode esrst under telephony-service configuration mode.

Correct answer: A

Explanation

The correct answer is A because configuring mode esrst under voice register global configuration mode is necessary for enabling survivable remote site telephony features during a WAN outage. Options B, C, and D do not provide the correct configuration context or command needed for enabling the required features specifically for SIP branch phones.