Source note · Calls that drop after about 30 seconds
RFC 6026 adds an Accepted state to both INVITE client and server transactions and says an element sending or receiving a 2xx to INVITE must not destroy the matching INVITE transaction state.
Checked 2026-09-25
An element sending or receiving a 2xx to an INVITE transaction MUST NOT destroy any matching INVITE transaction state.
- Vendor
- IETF
- Product
- SIP
- Subsystem
- INVITE transaction
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 6026 and later
- Checked
- 2026-09-25
Sources
- RFC 6026: Correct Transaction Handling for 2xx Responses to Session Initiation Protocol (SIP) INVITE Requests — IETF / RFC Editor · tier 1 standards and regulators · Sections describing client and server transaction changes (Accepted state)
Cite this note
APA
WarmTransfer. (2026, September 25). Calls that drop after about 30 seconds: source note sip-calls-drop-30-seconds-accepted-state. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-calls-drop-30-seconds-accepted-state
BibTeX
@misc{warmtransfer-claim-sip-calls-drop-30-seconds-accepted-state,
title = {Calls that drop after about 30 seconds: source note sip-calls-drop-30-seconds-accepted-state},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-calls-drop-30-seconds-accepted-state},
note = {Source note sip-calls-drop-30-seconds-accepted-state, checked 2026-09-25}
}