Source note · SIP 488 and codec negotiation failures
Within a media stream the mapping of a dynamic payload type number to a codec must not change for the duration of the session.
Checked 2026-09-25
- Vendor
- IETF
- Product
- SDP offer
- Subsystem
- payload types
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 3264
- Checked
- 2026-09-25
Sources
- RFC 3264 — An Offer/Answer Model with the Session Description Protocol (SDP) — IETF / RFC Editor · tier 1 standards and regulators · Section 8.3.2 Changing the Set of Media Formats
Cite this note
APA
WarmTransfer. (2026, September 25). SIP 488 and codec negotiation failures: source note sip-488-codec-failures-dynamic-pt-stable. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-488-codec-failures-dynamic-pt-stable
BibTeX
@misc{warmtransfer-claim-sip-488-codec-failures-dynamic-pt-stable,
title = {SIP 488 and codec negotiation failures: source note sip-488-codec-failures-dynamic-pt-stable},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-488-codec-failures-dynamic-pt-stable},
note = {Source note sip-488-codec-failures-dynamic-pt-stable, checked 2026-09-25}
}