Source note · Wrong or missing caller ID on outbound calls
When the far end sees a number other than the one configured, the first thing to check is whether From and P-Asserted-Identity in the outbound INVITE carry different numbers. All three platforms can deliberately split them (Teams substitution with ForwardPai, Unified CM external presentation, Webex Dual Identity), and at least one vendor documents carriers preferring PAI.
inferred · Checked 2026-09-25
- Vendor
- multi-vendor
- Product
- Teams Direct Routing
- Subsystem
- troubleshooting
- Deployment
- multi-tenant, on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Status
- inferred
- 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; combined with the Unified CM and Webex claims noted
Cite this note
APA
WarmTransfer. (2026, September 25). Wrong or missing caller ID on outbound calls: source note caller-id-presentation-problems-inf-compare-from-pai. WarmTransfer. https://warmtransfer.net/knowledge/claims/caller-id-presentation-problems-inf-compare-from-pai
BibTeX
@misc{warmtransfer-claim-caller-id-presentation-problems-inf-compare-from-pai,
title = {Wrong or missing caller ID on outbound calls: source note caller-id-presentation-problems-inf-compare-from-pai},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/caller-id-presentation-problems-inf-compare-from-pai},
note = {Source note caller-id-presentation-problems-inf-compare-from-pai, checked 2026-09-25}
}