Teams ↔ OpenSIPS SBC
The problem
The organization needed Microsoft Teams calling to interoperate reliably with its existing SIP trunks and telephony environment without replacing established carrier and PBX infrastructure.
What I built
I designed and deployed an OpenSIPS-based SBC for SIP signaling and used RTPProxy for media handling. I implemented routing and interoperability logic, connected Teams Direct Routing to the on-premises voice environment, and applied operational controls for maintainability and troubleshooting.
Where it landed
The integration enabled Teams users to use the existing telephony infrastructure through a purpose-built, supportable bridge. It showcases practical expertise across Microsoft cloud telephony, SIP routing, Linux networking, media paths, production diagnostics, and enterprise system integration.