Microsoft Teams Calling

Get the most out of Microsoft Teams with Gamma

Give Microsoft Teams a voice with high availability architecture from the UK’s No.1 SIP Trunks provider.

As a leading Microsoft Teams practice, we have over 15 years’ experience enabling voice solutions for Microsoft Teams.

Whether it’s DIY Direct Routing, Operator Connect or a fully managed Direct Routing solution, we can help your business deploy effective voice and video collaboration for your Microsoft Teams environment, thanks to our rich Microsoft Teams phone system with full Cloud PBX functionality.

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Enable Microsoft Teams telephony with Gamma

What makes Gamma the right choice for Microsoft Teams?

Microsoft Teams Calling with Gamma

Microsoft Teams Operator Connect

Operator Connect is a way for businesses to simply and quickly enable calling for Microsoft Teams, leveraging Gamma as their operator.

For organisations looking for high levels of availability and resilience, backed by Microsoft’s Operational Excellence programme.


Operator connect

A business-grade cloud PBX for Microsoft users

Horizon for Microsoft Teams

Businesses looking to enable voice within their Microsoft Teams can now use Horizon for Microsoft Teams to make and receive calls globally while benefiting from a feature-rich, cost-effective alternative to Microsoft Calling Plans.

Microsoft Teams Managed Services

Microsoft Teams Cloud UCX™

CloudUCX™ is a collection of leading cloud solutions – delivered as a service – which enhances the standard Microsoft Teams offering.

For organisations that require additional flexibility, have more complex estates or international requirements.

lady on video call using microsoft teams

Microsoft Teams Calling with Gamma's Direct Routing

Microsoft Teams Direct Routing

Microsoft Teams Direct Routing is ideal for organisations simply looking to enable voice calling within Microsoft Teams, with the capability to manage deployment in-house.

This solution offers free calls, enhanced call control features and carrier-grade infrastructure, maximising value from your Microsoft Teams environment.

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How does Gamma compare with other providers?

Other Teams Voice ProvidersGamma
CommoditySIP and SBC Support
Portal based support
Phone support
24×7 support
DR Adds, Moves and Changes
Regular Service Reviews
Dedicated Account Manager
Enablement & SupportManaged onboarding
User Migration
Training and Adoption services
Cloud based Training Portal
Dedicated Customer Success Manager
Microsoft Teams support
Teams – Adds, Moves and Changes
Guided Success Delivery Framework
Number Porting Assurance Service
Packaged services / Transition services
Integrated into Teams Admin Center
Microsoft PartnershipPartnered with Microsoft to provide shared SLAs for support, availability and call quality
Calling for Microsoft Teams Advanced Specialisation


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