Source note · SIP trace capture and ladder analysis
Each SIP proxy uses the Via header field to decide where to send a response and removes its own address from the top Via before forwarding it.
Checked 2026-09-23
Each proxy uses the Via header field to determine where to send the response and removes its own address from the top.
- Vendor
- IETF
- Product
- SIP
- Subsystem
- routing
- Deployment
- multi-tenant, on-premises
- Region
- not restricted
- Release range
- RFC 3261 (June 2002)
- Checked
- 2026-09-23
Sources
- RFC 3261 — SIP: Session Initiation Protocol — IETF / RFC Editor · tier 1 standards and regulators · Section 4 Overview of Operation
Cite this note
APA
WarmTransfer. (2026, September 23). SIP trace capture and ladder analysis: source note sip-trace-analysis-via-response-path. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trace-analysis-via-response-path
BibTeX
@misc{warmtransfer-claim-sip-trace-analysis-via-response-path,
title = {SIP trace capture and ladder analysis: source note sip-trace-analysis-via-response-path},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trace-analysis-via-response-path},
note = {Source note sip-trace-analysis-via-response-path, checked 2026-09-23}
}