Source note · Branded calling and CNAM delivery
For Teams Direct Routing the substituted number and the CNAM are sent in the SIP From header; if the SBC is configured with ForwardPai true, the P-Asserted-Identity header carries the real calling user.
Checked 2026-09-24
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- sip-signalling
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Manage caller ID for users - Microsoft Teams — Microsoft · tier 2 current vendor documentation · Outbound calling line ID (Direct Routing paragraph)
Cite this note
APA
WarmTransfer. (2026, September 24). Branded calling and CNAM delivery: source note branded-calling-cnam-teams-dr-from-header. WarmTransfer. https://warmtransfer.net/knowledge/claims/branded-calling-cnam-teams-dr-from-header
BibTeX
@misc{warmtransfer-claim-branded-calling-cnam-teams-dr-from-header,
title = {Branded calling and CNAM delivery: source note branded-calling-cnam-teams-dr-from-header},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/branded-calling-cnam-teams-dr-from-header},
note = {Source note branded-calling-cnam-teams-dr-from-header, checked 2026-09-24}
}