Source note · SDP offer answer and codec negotiation
A media stream is removed by setting its port to zero in a new offer, and a stream offered with port zero must be answered with port zero.
Checked 2026-09-15
A stream that is offered with a port of zero MUST be marked with port zero in the answer.
- Vendor
- IETF
- Product
- SIP
- Subsystem
- SDP offer/answer
- Deployment
- not restricted
- Region
- not restricted
- Release range
- RFC 3264
- Checked
- 2026-09-15
Sources
- RFC 3264 — An Offer/Answer Model with the Session Description Protocol (SDP) — IETF / RFC Editor · tier 1 standards and regulators · RFC 3264 section 8.2 Removing a Media Stream
Cite this note
APA
WarmTransfer. (2026, September 15). SDP offer answer and codec negotiation: source note sdp-oa-port-zero-removes-a-stream. WarmTransfer. https://warmtransfer.net/knowledge/claims/sdp-oa-port-zero-removes-a-stream
BibTeX
@misc{warmtransfer-claim-sdp-oa-port-zero-removes-a-stream,
title = {SDP offer answer and codec negotiation: source note sdp-oa-port-zero-removes-a-stream},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sdp-oa-port-zero-removes-a-stream},
note = {Source note sdp-oa-port-zero-removes-a-stream, checked 2026-09-15}
}