IETF standards:
- IPv4
- IPv6, in some situations
- TCP
- UDP
- HTTP/HTTPS
- SDP
- ICE
- RTP/RTCP
- SRTP
- TURN
- STUN
- RTP Topologies
- SCTP (data channel)
Codecs:
- OPUS
- G.722
- a-law/µ-law/G.711
- VP8
- VP9 (Is there a better link to an actual specification somewhere?)
- H.264
- H.265
Web standards