An SBC can send a Direct Routing call straight to a Teams user's voicemail, without notifying the user, by adding opaque=app:voicemail to the Request-URI.
Checked 2026-09-25
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- voicemail
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Enable users for Direct Routing — Microsoft · tier 2 current vendor documentation · Configure sending calls directly to voicemail section
Cite this note
APA
WarmTransfer. (2026, September 25). Unified CM and Teams Phone coexistence during a migration: source note cucm-teams-coexistence-opaque-voicemail. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-teams-coexistence-opaque-voicemail
BibTeX
@misc{warmtransfer-claim-cucm-teams-coexistence-opaque-voicemail,
title = {Unified CM and Teams Phone coexistence during a migration: source note cucm-teams-coexistence-opaque-voicemail},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-teams-coexistence-opaque-voicemail},
note = {Source note cucm-teams-coexistence-opaque-voicemail, checked 2026-09-25}
}