Source note · SIP 488 and codec negotiation failures
If an offer carries crypto attributes but none is valid or supported, the answerer must reject that media stream.
Checked 2026-09-25
- Vendor
- IETF
- Product
- SDES
- Subsystem
- SRTP keying
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 4568
- Checked
- 2026-09-25
Sources
- RFC 4568: Session Description Protocol (SDP) Security Descriptions for Media Streams — IETF / RFC Editor · tier 1 standards and regulators · Section 5.1.2 Generating the Initial Answer - Unicast Streams
Cite this note
APA
WarmTransfer. (2026, September 25). SIP 488 and codec negotiation failures: source note sip-488-codec-failures-sdes-no-valid-crypto. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-488-codec-failures-sdes-no-valid-crypto
BibTeX
@misc{warmtransfer-claim-sip-488-codec-failures-sdes-no-valid-crypto,
title = {SIP 488 and codec negotiation failures: source note sip-488-codec-failures-sdes-no-valid-crypto},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-488-codec-failures-sdes-no-valid-crypto},
note = {Source note sip-488-codec-failures-sdes-no-valid-crypto, checked 2026-09-25}
}