Microsoft Teams · PSTN connectivity
Why our teams direct routing training
Every learner gets a dedicated Microsoft 365 tenant and an SBC with public certificates.
Unique CUBE-for-Teams content for organisations running both platforms.
SIP OPTIONS, TLS and call analytics: the skills that close incidents.
What you'll learn
Exams
Teams Phone, including Direct Routing, is 40–45% of the exam.
Specialist training in Teams PSTN connectivity: Direct Routing design, SBC pairing, media bypass, Local Media Optimisation, Location-Based Routing and Operator Connect.
Supports MS-721
Connect Microsoft Teams Phone to the PSTN and to CUCM using Cisco CUBE as a certified Direct Routing SBC. This is the course where the two platforms meet.
Supports MS-721
The Microsoft Teams voice engineer course: Teams Phone, Direct Routing, Operator Connect, devices, meetings and troubleshooting, mapped to MS-721.
MS-721
Keep Teams Phone running: structured voice troubleshooting with call analytics and CQD, plus branch survivability using Survivable Branch Appliances.
Supports MS-721
Virtual labs
5 exercises
A dedicated Microsoft 365 tenant with Teams Phone licences, a certified SBC and a PSTN simulator. Real Direct Routing, not screenshots.
Microsoft 365 Teams Phone ↔ SBC ↔ PSTN simulator and CUCM
5 exercises
A full SIP trunking edge: CUBE, a simulated carrier and a CUCM cluster. Ideal for dial-peer design, SIP normalisation and security practice.
PSTN simulator ↔ CUBE ↔ CUCM cluster ↔ endpoints
FAQ
No. Labs provide a dedicated, time-boxed tenant with Teams Phone licensing and a pre-built SBC.
Yes. Cisco CUBE is a Microsoft-certified Direct Routing SBC on supported platforms and releases. Our CUBE for Teams Direct Routing course covers it end to end.
Direct Routing gives maximum control and PBX/CUCM integration. Operator Connect offloads SBC operations to a carrier. Many enterprises use both.
Buy a single course, or get every course and 60 lab hours a month with All-Access.