Implementing Cisco Advanced Call Control and Mobility Services (CLACCM) — Question 60

An engineer is troubleshooting local ringback on a Cisco SIP gateway. The gateway is not ignoring the SIP 180 response with SDP from the service provider, and the far end device is sending the 180 with SDP to play ringback from the IP address specified in the SDP. Which configuration change must be made on the gateway to resolve the issue?

Answer options

• A. Router(config-sip-ua)# no disable-early-media 180
• B. Router(conf-voi-serv)# no disable-early-media 180
• C. Router(conf-voi-serv)# disable-early-media 180
• D. Router(config-sip-ua)# disable-early-media 180

Correct answer: D

Explanation

The correct answer is D because enabling early media allows the SIP gateway to process and play the ringback tone indicated in the SDP. Options A and B are incorrect since they disable early media, preventing the gateway from using the provided SDP for ringback. Option C is also wrong because it applies the setting in the wrong context.