Which protocol carries actual voice packets?

Which protocol carries actual voice packets?

• A. RTCP
• B. RTP
• C. SIP
• D. TLS

Answer: (B)

Actual voice data in real-time communications is transported by a protocol designed for real-time media delivery. This protocol carries the encoded audio payload in packets that include timing and sequence information so the receiver can play back the audio smoothly and in the correct order. It is optimized for low latency and supports synchronization of multiple streams. Other protocols in the mix have different roles: the control protocol handles quality reports rather than payload, the signaling protocol sets up and tears down calls, and the encryption protocol protects the transport but does not carry the media itself. Therefore, the protocol responsible for carrying actual voice packets is RTP.

Actual voice data in real-time communications is transported by a protocol designed for real-time media delivery. This protocol carries the encoded audio payload in packets that include timing and sequence information so the receiver can play back the audio smoothly and in the correct order. It is optimized for low latency and supports synchronization of multiple streams. Other protocols in the mix have different roles: the control protocol handles quality reports rather than payload, the signaling protocol sets up and tears down calls, and the encryption protocol protects the transport but does not carry the media itself. Therefore, the protocol responsible for carrying actual voice packets is RTP.