Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) — Question 325

A Cisco IP Phone 7841 that is registered to a Cisco UCM with default configuration receives a call setup message. Which codec is negotiated when the SDP offer includes this line of text? m=audio 49181 RTP/AVP 0 8 97

Answer options

• A. G.711alaw
• B. iLBC
• C. G.722
• D. G.711ulaw

Correct answer: D

Explanation

The line in the SDP offer indicates that codec 0 (G.711ulaw) is the first option, making it the preferred choice for audio. While G.711alaw, iLBC, and G.722 are also listed, they are not prioritized over G.711ulaw, which is commonly used in North America.