Source note · SIP 488 and codec negotiation failures
Under RFC 3261 a failed re-INVITE does not tear down the existing call; the session continues with the previously negotiated characteristics.
Checked 2026-09-25
- Vendor
- IETF
- Product
- SIP
- Subsystem
- re-INVITE
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 3261
- Checked
- 2026-09-25
Sources
- RFC 3261 — SIP: Session Initiation Protocol — IETF / RFC Editor · tier 1 standards and regulators · Section 14.2 UAS Behavior
Cite this note
APA
WarmTransfer. (2026, September 25). SIP 488 and codec negotiation failures: source note sip-488-codec-failures-reinvite-failure-keeps-call. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-488-codec-failures-reinvite-failure-keeps-call
BibTeX
@misc{warmtransfer-claim-sip-488-codec-failures-reinvite-failure-keeps-call,
title = {SIP 488 and codec negotiation failures: source note sip-488-codec-failures-reinvite-failure-keeps-call},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-488-codec-failures-reinvite-failure-keeps-call},
note = {Source note sip-488-codec-failures-reinvite-failure-keeps-call, checked 2026-09-25}
}