Source note · Carrier escalation evidence packages
RFC 7989 requires B2BUAs to preserve Session-ID values when forwarding messages so identifiers stay consistent across dialog legs.
Checked 2026-09-24
- Vendor
- IETF
- Product
- SIP
- Subsystem
- Session-ID header
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 7989
- Checked
- 2026-09-24
Sources
- RFC 7989: End-to-End Session Identification in IP-Based Multimedia Communication Networks — IETF / RFC Editor · tier 1 standards and regulators · Section 7, B2BUA behaviour
Cite this note
APA
WarmTransfer. (2026, September 24). Carrier escalation evidence packages: source note carrier-escalation-evidence-session-id-b2bua. WarmTransfer. https://warmtransfer.net/knowledge/claims/carrier-escalation-evidence-session-id-b2bua
BibTeX
@misc{warmtransfer-claim-carrier-escalation-evidence-session-id-b2bua,
title = {Carrier escalation evidence packages: source note carrier-escalation-evidence-session-id-b2bua},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/carrier-escalation-evidence-session-id-b2bua},
note = {Source note carrier-escalation-evidence-session-id-b2bua, checked 2026-09-24}
}