Source note · SIP 488 and codec negotiation failures
The m= line proto field distinguishes RTP/AVP (plain RTP under the audio/video profile over UDP) from RTP/SAVP (SRTP over UDP), so the transport profile is negotiated separately from the codec list.
Checked 2026-09-25
- Vendor
- IETF
- Product
- SDP
- Subsystem
- media description
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 8866
- Checked
- 2026-09-25
Sources
- SDP: Session Description Protocol — IETF / RFC Editor · tier 1 standards and regulators · Section 5.14 Media Descriptions (m=)
Cite this note
APA
WarmTransfer. (2026, September 25). SIP 488 and codec negotiation failures: source note sip-488-codec-failures-proto-avp-vs-savp. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-488-codec-failures-proto-avp-vs-savp
BibTeX
@misc{warmtransfer-claim-sip-488-codec-failures-proto-avp-vs-savp,
title = {SIP 488 and codec negotiation failures: source note sip-488-codec-failures-proto-avp-vs-savp},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-488-codec-failures-proto-avp-vs-savp},
note = {Source note sip-488-codec-failures-proto-avp-vs-savp, checked 2026-09-25}
}