Source note · PRI and TDM gateway interworking
Direct Routing certification is granted to specific SBC firmware versions; higher firmware is supported as long as the major.minor version is the same.
Checked 2026-09-24
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- SBC certification
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Session Border Controllers certified for Direct Routing - Microsoft Teams — Microsoft · tier 2 current vendor documentation · Note in introductory section
Cite this note
APA
WarmTransfer. (2026, September 24). PRI and TDM gateway interworking: source note legacy-pri-tdm-dr-firmware-major-minor. WarmTransfer. https://warmtransfer.net/knowledge/claims/legacy-pri-tdm-dr-firmware-major-minor
BibTeX
@misc{warmtransfer-claim-legacy-pri-tdm-dr-firmware-major-minor,
title = {PRI and TDM gateway interworking: source note legacy-pri-tdm-dr-firmware-major-minor},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/legacy-pri-tdm-dr-firmware-major-minor},
note = {Source note legacy-pri-tdm-dr-firmware-major-minor, checked 2026-09-24}
}