Source note · SIP trace capture and ladder analysis

The Teams SIP call flow ladder shows only the SIP messages exchanged between the customer's SBC and the Microsoft SIP Proxy, in chronological order with arrow direction showing sender and receiver.

Checked 2026-09-23

Each "rung" of the ladder represents a SIP message.

Vendor: Microsoft
Product: Microsoft Teams Phone Direct Routing
Subsystem: Teams admin center SIP call flow
Deployment: multi-tenant
Region: not restricted
Release range: current as of 2026-09-23
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

Cite this note

APA

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

BibTeX

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

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