Source note · SDP offer answer and codec negotiation
An SDP written for offer answer may omit both the e and p lines that RFC 2327 requires, must contain exactly one session description, and for a unicast session should carry a time line of 0 0 and a subject line of a single space or a dash.
Checked 2026-09-15
an SDP formulated for an offer/answer application MAY omit both the e and p lines
- 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 5 Generating the Initial Offer
Cite this note
APA
WarmTransfer. (2026, September 15). SDP offer answer and codec negotiation: source note sdp-oa-relaxes-two-rfc-2327-requirements. WarmTransfer. https://warmtransfer.net/knowledge/claims/sdp-oa-relaxes-two-rfc-2327-requirements
BibTeX
@misc{warmtransfer-claim-sdp-oa-relaxes-two-rfc-2327-requirements,
title = {SDP offer answer and codec negotiation: source note sdp-oa-relaxes-two-rfc-2327-requirements},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sdp-oa-relaxes-two-rfc-2327-requirements},
note = {Source note sdp-oa-relaxes-two-rfc-2327-requirements, checked 2026-09-15}
}