Microsoft lists integration with third-party PBXs or analog devices as one of the reasons Direct Routing is a good fit, and its architecture diagram shows the certified SBC connecting Teams Phone to both an existing PSTN carrier and an existing PBX.
Checked 2026-09-25
Require integration with third-party PBXs or analog devices.
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- architecture
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Plan Direct Routing — Microsoft (Microsoft Learn) · tier 2 current vendor documentation · Why choose Direct Routing? section; Direct Routing architecture section (text diagram)
Cite this note
APA
WarmTransfer. (2026, September 25). Unified CM and Teams Phone coexistence during a migration: source note cucm-teams-coexistence-dr-third-party-pbx-fit. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-teams-coexistence-dr-third-party-pbx-fit
BibTeX
@misc{warmtransfer-claim-cucm-teams-coexistence-dr-third-party-pbx-fit,
title = {Unified CM and Teams Phone coexistence during a migration: source note cucm-teams-coexistence-dr-third-party-pbx-fit},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-teams-coexistence-dr-third-party-pbx-fit},
note = {Source note cucm-teams-coexistence-dr-third-party-pbx-fit, checked 2026-09-25}
}