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Microsoft Teams Phone

Choose how you enable PSTN calling with Operator Connect, Direct Routing or Horizon for Teams. Our flexible Direct Routing options can be managed, unmanaged or customised. Whatever your needs, we have a solution to suit your business.

Man on a telephone

What makes Gamma the right choice for Microsoft Teams?

With over 20 years’ experience in delivering cloud-first communications services and a Microsoft Solutions Partner for Modern Work with Advanced specialisation in Calling for Microsoft Teams, Gamma are experts in enabling voice for Microsoft Teams Phone.

  • Cloud first communications heritage

    We have a reputation built on technical expertise and voice service delivery. We’re the UK’s No.1 SIP provider, with 1 in 3 UK businesses relying on us to power their cloud voice services.

  • In depth Microsoft Teams expertise

    Gamma’s voice services can be fully integrated into Microsoft Teams with full PSTN breakout. Gamma has triplicate entry points into Microsoft Azure providing high levels of resilience and availability.

  • 18+ years powering voice solutions for Microsoft

    Gamma has earned advanced specialisation in Calling for Microsoft Teams. This certification recognises Microsoft partners with deep knowledge, extensive experience and proven customer success.

  • We are a business-only provider

    We’re known throughout the industry as being ‘easy to do business with’. We have full management support, from simple provisioning to our UK-based support teams available 24x7x365. We provide industry-leading SLAs.

  • We have full network ownership

    We have full control and flexibility over our services and we own and operate our own network infrastructure, which means that we can build a bespoke solution to meet your exact business requirements.

  • We are highly accredited, secure and reliable

    We hold a variety of independently audited certifications, demonstrating our commitment to driving the highest quality of standards for our products, systems and underlying infrastructure.

Get the most out of Microsoft Teams with Gamma.

Transform the way you communicate on Microsoft Teams with the UK’s #1 SIP provider. We can help your business deploy secure, effective voice and video collaboration for your Microsoft Teams environment. Choose how you enable calling with Operator Connect or Direct Routing or our managed service for enterprises.

Delivering a better experience

Excellent customer service

We are committed to excellence in customer service and support, not only will you benefit from dedicated account management, but we also have UK-based support teams offering 24×7 first line support.

Pedigree with Microsoft

Full PSTN Breakout

Built in resilience

Lady looking at laptop while on phone
Give Teams a voice

Ease of deployment and management

We understand that implementing a new solution can be daunting. With Gamma, you get the highest level of enablement and support depending on your requirements. With global reach, our Microsoft Teams solutions have been designed with scalable capacity, allowing your business to grow without restriction.

Enhanced calling experience

Full PBX capabilities

Choice & support

Smiling lady on a video call on a laptop
We're good together
“Gamma helped us every step of the way to migrate our critical services to Teams.”

How does our Teams managed service compare with other providers?

Other Teams Voice Providers

Commodity

  • SIP and SBC Support
  • Portal based support
  • Phone support
  • 24×7 support
  • DR Adds, Moves and Changes
  • Regular Service Reviews
  • Dedicated Account Manager

Enablement & Support

  • Managed 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 Partnership

  • Partnered with Microsoft to provide shared SLAs for support, availability and call quality
  • Calling for Microsoft Teams Advanced Specialisation

Gamma

Commodity

  • SIP and SBC Support
  • Portal based support
  • Phone support
  • 24×7 support
  • DR Adds, Moves and Changes
  • Regular Service Reviews
  • Dedicated Account Manager

Enablement & Support

  • Managed 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 Partnership

  • Partnered with Microsoft to provide shared SLAs for support, availability and call quality
  • Calling for Microsoft Teams Advanced Specialisation

Commodity

SIP and SBC Support
Portal based support
Phone support
24×7 support
DR Adds, Moves and Changes
Regular Service Reviews
Dedicated Account Manager

Enablement & Support

Managed 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 Partnership

Partnered with Microsoft to provide shared SLAs for support, availability and call quality
Calling for Microsoft Teams Advanced Specialisation

Frequently Asked Questions about Microsoft Teams Phone

Why would I go to Gamma and not just buy direct from Microsoft?

Could Teams really replace a PBX?

What do I do if Microsoft Teams Phone from Gamma has an outage?

Can I keep my existing phone numbers with Microsoft Teams Phone?

How does Direct Routing for Microsoft Teams handle emergency calls?

What is hosted telephony?

I need MiFID II compliant call recording

Do I need an internet service from Gamma to qualify for Microsoft Teams Phone?

Do I need PowerShell experience to provision Users?

What is Operator Connect?

What is Direct Routing?

Watch
Read
Listen

Insight from Gamma, and leading figures from the evolving world of business communications

Podcast

Microsoft Teams Updates - The Gammabox Podcast

Interview

UCaaS & CCaaS for better CX

Webcast

Giving teams a voice