When organizations decide to move to Microsoft Teams Phone, one of the first decisions they face is how to actually make the switch. There are two main paths: migrating without a service provider using Microsoft Calling Plans, or migrating with a telecom partner through Operator Connect. Each has genuine advantages and real limitations.
Why Migrate to Teams Phone
Teams Phone consolidates calling, chat, and meetings into one platform. For hybrid and remote organizations, this means the same phone number works whether someone is at their desk, at home, or traveling. There is no separate phone system to manage, no desk phone required, and no dependency on a physical office location.
Option 1: Microsoft Calling Plans (No Service Provider)
This approach lets you configure Teams Phone entirely through Microsoft without negotiating with a third-party telecom carrier.
Advantages
- Multiple pricing models: Choose from domestic calling, international calling, and pay-as-you-go options based on your usage patterns.
- Streamlined setup: No lengthy telecom negotiations or carrier paperwork.
- Single vendor: Microsoft handles everything, which simplifies billing and support.
Limitations
- Internet dependency: Requires a stable internet connection. Teams Phone over Microsoft Calling Plans is not a good fit for locations with unreliable connectivity.
- Limited support channels: Some issues require direct Microsoft intervention, which can be slow.
- Geographic restrictions: Microsoft Calling Plans are not available in every country or region.
Option 2: Operator Connect (With a Service Provider)
Operator Connect pairs Teams Phone with a participating telecom carrier, combining Teams' collaboration features with your existing telecom relationship.
Advantages
- Cost efficiency: Use existing contracts or select from participating operators to find better rates.
- Extended coverage: Some operators have broader geographic reach than Microsoft's Calling Plans.
- Operator-managed PSTN: Compatible with existing on-premises systems like Session Border Controllers, which matters for organizations with complex telephony setups.
Limitations
- More time-intensive: Coordinating with a telecom provider adds steps and extends the timeline.
- Limited provider selection: Not all telecom operators participate in the Operator Connect program.
- No e911 testing: Some providers do not support dynamic emergency call testing.
How to Choose
Choose Microsoft Calling Plans when you need a quick per-user voice service setup, prefer predictable monthly billing, have straightforward calling requirements, and are comfortable managing everything through the Microsoft admin center.
Choose Operator Connect when you need advanced calling functionality, value your existing telecom provider relationship, or need geographic coverage that Microsoft Calling Plans cannot provide.
Regardless of which path you choose, getting the configuration right from the start matters. Regroove can help you evaluate the options and handle the technical implementation so the transition goes smoothly.