With MS-720 retired, MS-721 (Microsoft 365 Certified: Collaboration Communications Systems Engineer Associate) is Microsoft's voice engineering certification. Teams Phone makes up around 40–45% of the exam.
This course is built by voice engineers, not generalists. You will design numbering, emergency calling and routing, deploy Direct Routing with a real SBC, and troubleshoot calls the way enterprise support teams do.
26 h video + 24 h labs, about 7 weeks at 6–8 hours per week.
6 modules · 36 lessons
Hands-on in a browser-based pod. Each lab starts from a clean snapshot.
| # | Lab | Skills | Time |
|---|---|---|---|
| 1 | Assign numbers and configure emergency locations | Number management, E911 | 60 min |
| 2 | Direct Routing with a certified SBC | SBC pairing, voice routing | 2 h |
| 3 | Multi-level auto attendant and call queues | Voice apps | 60 min |
| 4 | Location-Based Routing configuration | LBR | 60 min |
| 5 | Diagnose poor call quality with CQD and call analytics | Troubleshooting | 60 min |
Runs on: Microsoft Teams Direct Routing Labs
| Exam | Blueprint domain | Weight | Covered in |
|---|---|---|---|
| MS-721 | Plan and design collaboration communications systems | 25–30% | Module 1 |
| MS-721 | Configure and manage Teams meetings and events | 10–15% | Module 5 |
| MS-721 | Configure and manage Teams Phone | 40–45% | Modules 2–4 |
| MS-721 | Monitor and troubleshoot collaboration communications systems | 15–20% | Module 6 |
Weights follow the Microsoft Learn MS-721 study guide. Check the current skills outline before your exam.
Lead Instructor, Microsoft Teams Voice
Tomasz has led Teams Phone rollouts for multinational enterprises, covering Direct Routing, Operator Connect and Teams Rooms at scale. He specialises in hybrid Cisco and Teams coexistence and migration.
Watch before you buy, no sign-up required.
“Real voice engineering, not a slide deck. The Direct Routing lab with a real SBC is the highlight.”
“Perfect for a Cisco person learning Teams. It maps concepts I already knew onto Microsoft's model.”
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
Prepare for MS-700 and the Microsoft 365 Certified: Teams Administrator Associate, covering governance, security, meetings, calling and troubleshooting.
MS-700
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