Microsoft Teams Phone & Direct Routing

Microsoft Teams is the phone system for millions of organizations — and Direct Routing is how you connect it to any carrier using a Session Border Controller (SBC). This intermediate course takes you from ‘what is Teams Phone?’ to confidently designing, connecting, securing, routing and troubleshooting a Direct Routing deployment.

Across five visual, example-rich modules you’ll learn the four PSTN connectivity options and when to choose Direct Routing; the end-to-end architecture and Microsoft’s SIP proxy (pstnhub) with failover; the exact SBC requirements, certificates, TLS and ports; the SIP OPTIONS health handshake; the full voice-routing pipeline (dial plans, PSTN usages, voice routes, policies) with real PowerShell; and media bypass & Local Media Optimization for call quality. Every fact is verified against Microsoft Learn and reinforced with diagrams, worked examples, quizzes and real-world case studies.

Recommended first: the GVIT VoIP & SIP Fundamentals and SIP Trunking & SBC courses. You will be able to: choose a PSTN option · stand up & certify an SBC · design Teams voice routing · enable media bypass/LMO · and troubleshoot the classic ‘SBC inactive’ and ‘no audio’ issues.