Source note · SIP trace capture and ladder analysis

Cloud-side ladder views such as the Teams SIP call flow cover only one hop, so an end-to-end ladder for a PSTN call still needs an SBC-side or carrier-side trace joined to it.

inferred · Checked 2026-09-23

Vendor: Microsoft
Product: Microsoft Teams Phone Direct Routing
Subsystem: trace correlation
Deployment: multi-tenant
Region: not restricted
Release range: current as of 2026-09-23
Status: inferred
Checked: 2026-09-23

Sources

SIP call flow for Direct Routing in Microsoft Teams — Microsoft · tier 2 current vendor documentation · Understanding the SIP call flow view (basis for the inference)

Cite this note

APA

WarmTransfer. (2026, September 23). SIP trace capture and ladder analysis: source note sip-trace-analysis-infer-vendor-views-partial. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trace-analysis-infer-vendor-views-partial

BibTeX

@misc{warmtransfer-claim-sip-trace-analysis-infer-vendor-views-partial,
  title  = {SIP trace capture and ladder analysis: source note sip-trace-analysis-infer-vendor-views-partial},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/sip-trace-analysis-infer-vendor-views-partial},
  note   = {Source note sip-trace-analysis-infer-vendor-views-partial, checked 2026-09-23}
}

Read in context