Source note · Wrong or missing caller ID on outbound calls

Microsoft attributes a wrong caller ID on Direct Routing calls to From and P-Asserted-Identity differing while the PSTN prioritizes PAI, and recommends configuring the SBC to remove or modify the PAI header.

Checked 2026-09-25

Vendor: Microsoft
Product: Teams Phone Direct Routing
Subsystem: troubleshooting
Deployment: multi-tenant
Region: not restricted
Release range: current as of 2026-09-25; Direct Routing only
Checked: 2026-09-25

Sources

Issues with outbound calls - Microsoft Teams — Microsoft · tier 2 current vendor documentation · Incorrect caller ID displayed to the recipient > Cause / Resolution

Cite this note

APA

WarmTransfer. (2026, September 25). Wrong or missing caller ID on outbound calls: source note caller-id-presentation-problems-teams-dr-mismatch-cause. WarmTransfer. https://warmtransfer.net/knowledge/claims/caller-id-presentation-problems-teams-dr-mismatch-cause

BibTeX

@misc{warmtransfer-claim-caller-id-presentation-problems-teams-dr-mismatch-cause,
  title  = {Wrong or missing caller ID on outbound calls: source note caller-id-presentation-problems-teams-dr-mismatch-cause},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/caller-id-presentation-problems-teams-dr-mismatch-cause},
  note   = {Source note caller-id-presentation-problems-teams-dr-mismatch-cause, checked 2026-09-25}
}

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