Source note · SIP call forwarding and routing loops
RFC 7044 (February 2014) defines the SIP History-Info header, which records how and why a request reached its target through retargeting such as forwarding, and it obsoletes RFC 4244.
Checked 2026-09-25
- Vendor
- IETF
- Product
- SIP
- Subsystem
- History-Info
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 7044 onward
- Checked
- 2026-09-25
Sources
- RFC 7044: An Extension to the Session Initiation Protocol (SIP) for Request History Information — IETF / RFC Editor · tier 1 standards and regulators · Abstract; Section 1 Introduction
Cite this note
APA
WarmTransfer. (2026, September 25). SIP call forwarding and routing loops: source note sip-forwarding-loops-history-info-purpose. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-forwarding-loops-history-info-purpose
BibTeX
@misc{warmtransfer-claim-sip-forwarding-loops-history-info-purpose,
title = {SIP call forwarding and routing loops: source note sip-forwarding-loops-history-info-purpose},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-forwarding-loops-history-info-purpose},
note = {Source note sip-forwarding-loops-history-info-purpose, checked 2026-09-25}
}