Which codec represents video that is supported by Cisco TelePresence endpoints?

H.263 is an older, lower-quality video codec used in early video conferencing systems and is not the primary or preferred codec for Cisco TelePresence endpoints.

H.323 is a call control and signaling protocol stack, not a video codec; it governs how endpoints establish calls but does not define video compression.

H.264 (MPEG-4 AVC) is the standard video codec used by Cisco TelePresence endpoints, providing high-efficiency compression for HD and Full HD video conferencing. Cisco TelePresence systems are built around H.264 to deliver the high-definition video quality required in enterprise telepresence deployments. It is the baseline video codec across the entire TelePresence endpoint portfolio.

H.262 defines MPEG-2 video encoding used for broadcast television and DVD media, and is not used for video compression in Cisco TelePresence endpoints.