T2
SIP, WebRTC, RTP
Signaling, the description, and the media. 3 lessons. Each lesson cites the pages that were opened, and marks the rest confirm.
What SIP is for
T2-R04
Wikipedia says SIP initiates, maintains, modifies, and terminates communication sessions that involve voice, video, and messaging.
Offer, answer, and SDP
T2-R05
RFC 3264 is titled An Offer/Answer Model with the Session Description Protocol (SDP).
RTP, SRTP, and WebRTC
T2-R06
Wikipedia says RTP delivers audio and video over IP, typically over UDP, and that RTCP monitors transmission statistics and quality of servi
Sources and go deeper
Opened 2026-10. A row marked confirm has no link, because that page was not verified.
- RFC. RFC 3261, SIP last checked 2026-10
- Wikipedia. Session Initiation Protocol last checked 2026-10
- Wikipedia. Platform as a service, Communications platform as a service section last checked 2026-10
- Confirm. Release-specific menus for this track. confirm. Not opened as a single checklist. last checked 2026-10