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The #1 choice for voice providers

The global leader in voice-enabling Microsoft Teams with any phone service

Call2Teams™ is an established global platform and chosen by the world's major telephony brands to integrate with Microsoft Teams.

We partner with hundreds of distributors and resellers in countries across the globe to deliver and support our platform to their customers.

We work with the world's leading providers

new logo-frame.png well as a number of global telephony brands who white label our product who we can't mention!

The perfect answer to the 'new normal' for business.

Make and receive calls in Teams anywhere using your existing phone service

Ideal for businesses with staff working from home

Works with Microsoft Teams on PC, Mac or Mobile

Quick & simple implementation in minutes

No hardware or software

Simple low cost monthly subscription

Works with any phone system, PBX or SIP Trunk Provider

Enterprise grade encryption and security built-in

Call2Teams™ is and always will be a channel only business. We believe in providing our partners with a world class solution which is easy to provision and implement and secures their ongoing customer relationship.

Our partners are able to deliver our solution to thousands of businesses across the globe and provide those businesses with the service and support they need.

Telephony Providers

PBX platforms and voice networks around the world partner with Call2Teams™ to integrate their platform and services with Microsoft Teams. Partner with us


Some of the world's largest telephony and Microsoft distributors around the world partner with Call2Teams™ to provide their partners with Microsoft Teams integration. Partner with us

Value Added Resellers

It is through our global network of hundreds of partners across four continents that our solution is delivered and supported to our customers. Call2Teams™ is the perfect vendor as our solution is easy to provision and configure and it generates monthly recurring revenues for partners. Partner with us


We are very proud to have customers from large multinational corporations to small owner managed SMBs who have transformed their productivity and collaboration by connecting their existing phone service to Microsoft Teams. Get a Free 30 Day Trial

Call2Teams™ is a channel only business

A truly global platform

Operating predominantly in the Microsoft Azure cloud, the service is currently served from super-clusters in four continents across the globe. We build, maintain and operate the complete high-availability Teams Direct Routing infrastructure across the globe 24/7 so our partners don't have to. 

Rich in features

One Click Deployment

One-click deployment to configure the end customer Microsoft 365 tenant. This zero-skill tool allows the controlled deployment of the service at scale through voice and IT channels. 

Simple per-user pricing

Created as a simple SaaS offer, Call2Teams is sold on a monthly per-user subscription with full flexibility of licence models. This provides an easy to understand and easy to buy offer for channels and end customers. 

PBX Registration interface

Ability to register Teams users to a customer on-prem or Cloud PBX effectively making a Teams user into a softphone on the PBX. This is a novel solution for customers that rely on PBX capability that Teams cannot provide or are aiming for a hybrid deployment. 

Global SaaS distribution 

Integrations are present for several Cloud Distribution channels including Ingram and Microsoft. This provides real-time n-tier provisioning of subscriptions  

Elastic multitenancy

Built as a global cloud application from the ground up, Call2Teams allows easy scaling of core SBC infrastructure and the addition of new hosting locations for increased global scale. Where supported by the SBC platform, the management system provides auto scaling of server capacity and follow-the-sun real-time scaling. 

Extensive Interop 

Compatibility and experience with mainstream providers of PBX and Trunks has been built up over four years. PBX connectivity is emulating a 3rd party SIP phone, so works with virtually everything. SIP trunks operate with all main delivery methods. Vendor Certification in progress for leading PBX platforms including Mitel, Panasonic, Ericsson, Yeastar and Unify. 

Microsoft Commerce Integration 

The Microsoft provisioning and commerce platform provides access to global markets into 37 countries for purchasing, payment and tax management. Customers can pay Microsoft for the service alongside their Microsoft  365 subscriptions. 

Subscription Management

A channel-ready n-tier subscription management interface allows both manual and API provisioning and management of user subscriptions and organisations. It provides the ability to onboard distributors and carriers with a variety of business process and automation requirements. 

White Label Available

The Service can be branded so that only the partner brand is visible throughout the service. This offer is especially use for for partners who want to make the service their own.

Microsoft co-sell

Built extensively in the Azure cloud, Call2Teams is validated by Microsoft for IP Co-Sell. This means Microsoft Sellers can promote and be rewarded for sales of Call2Teams in their Enterprise customer base. It also provides a high degree of comfort to customers and partners considering the service. 

SIP Trunk interface

Ability to operate with provider SIP trunking services in dynamic IP  registration mode. This delivers the essential Teams-ready capability for SIP trunks to connect to Teams to allow providers to address the Teams market. 


Full System API for subscription and service management to interface with BSS and OSS in channel and operator environments.  

Our Products

Connect an existing PBX to Teams

Connect existing SIP Trunks to Teams

Call2Teams enabled us to deliver a great calling experience to our Office 365 Teams users without compromising on our current call management tools.

And it was set-up in record time.


Tarryn Magistrelli. Finance & Operations Manager, Futerra Sustainability Communications


Try Call2Teams™ free for one month

Sign up for a trial, and get full access to Call2Teams™. You can add up to 25 users for 1 month.

By clicking ‘Start Your Free Trial’, I agree to Call2Team's Terms & Privacy Policy.

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