When Teams calling breaks, users expect answers in minutes. This course gives Teams voice engineers a structured method for call quality, routing and Direct Routing problems, using the tools Microsoft provides.
It also covers Survivable Branch Appliances (SBA), which let branch users keep making PSTN calls through a supported SBC when the connection to Microsoft 365 is lost.
10 h video + 10 h labs, about 3 weeks at 6–8 hours per week.
4 modules · 15 lessons
Hands-on in a browser-based pod. Each lab starts from a clean snapshot.
| # | Lab | Skills | Time |
|---|---|---|---|
| 1 | Fix five broken Teams calling scenarios | Routing, normalisation | 90 min |
| 2 | Investigate poor call quality with CQD | CQD, network data | 60 min |
| 3 | Configure an SBA and test branch survivability | SBA policies, failover testing | 90 min |
| Exam | Blueprint domain | Weight | Covered in |
|---|---|---|---|
| MS-721 | Monitor and troubleshoot collaboration communications systems | 15–20% | Modules 1–3 |
| MS-721 | Configure and manage Teams Phone | 40–45% | Module 4 |
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.
“Our team now resolves most Direct Routing incidents without escalating to the SBC vendor.”
“The SBA module was clear and practical. I would like more vendor-specific examples.”
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
The Microsoft Teams voice engineer course: Teams Phone, Direct Routing, Operator Connect, devices, meetings and troubleshooting, mapped to MS-721.
MS-721
A structured method for diagnosing failed calls, one-way audio, DTMF and registration problems from SIP traces, CUBE debugs and packet captures.
Supports 350-801 CLCOR