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Your business customers live in Teams. Their calling still doesn’t.

320 million people use Microsoft Teams every month. For most of them, voice calling is still handled by a separate system, from a separate provider, on a separate contract. That gap is your opportunity — and Dstny gives you every route to close it.
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Teams is where work happens

Calling needs to follow

Microsoft Teams has become the default collaboration environment for business customers across most of the markets you serve. But Teams calling — real PSTN voice inside the Teams interface — still reaches only a fraction of those users. The majority are still on separate phone systems, paying separate bills, with a separate provider.

That is the gap service providers are in the best position to close. You already have the customer relationships, the billing infrastructure, and the network. Dstny gives you the integration layer.

What is a Microsoft Teams phone system?

A Microsoft Teams phone system connects your customers' existing telephony to Teams, so calls, chat, and meetings all live in one place. For operators and telcos, it represents one of the clearest near-term revenue opportunities in the market — Microsoft Teams has over 320 million monthly active users, and most of them still make calls outside the platform.
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320M+ Teams users. A fraction with voice.

Microsoft Teams has over 320 million monthly active users globally. Voice calling is enabled for a small share of them. For service providers, that represents one of the largest untapped recurring revenue opportunities in the market today.

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Customers want one provider for everything.

Business customers are consolidating their communications onto fewer contracts and fewer vendors. Service providers who can deliver Teams calling alongside connectivity or mobile keep the account. Those who can’t are increasingly at risk of losing it.

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Three routes in. One platform behind all of them.

Not every customer situation is the same. Some need Direct Routing from their existing PBX. Some want Operator Connect simplicity. Some need mobile-first delivery via SIM. Dstny gives you all three, fully white-label, on a single partner platform.

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No voice expertise required.

Dstny handles the carrier-grade infrastructure, the Microsoft certification, the maintenance, and the upgrades. Your team handles the customer relationship. You do not need to build a voice operations function to compete in this market.

Microsoft Teams Integration Interface

How it works

Choose the right integration for your customers

Every SP market and every customer situation is different. Dstny offers three routes to Microsoft Teams voice — each carrier-grade, fully white-label, and deployable without building voice infrastructure.

Microsoft Calling PlansSmall customers, simple needsMicrosoft controls the revenue and relationship
Operator ConnectCustomers who want carrier choiceRequires Microsoft marketplace accreditation
Direct RoutingComplex, multi-site, or legacy PBXMost flexible, but more setup overhead

Explore the full Call2Teams portfolio

Call2Teams Direct Routing, Operator Connect, and Mobile are three separate products — each covering a distinct route to Microsoft Teams voice. The Call2Teams product page covers how they work together, what the commercial model looks like for service providers, and how Dstny compares to building it yourself.
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Call2Teams Direct Routing

Connect any existing telephony to Teams — without replacing it

Most business customers already have a phone system. Call2Teams Direct Routing connects that existing PBX or SIP trunk infrastructure to Microsoft Teams via Direct Routing as a Service (DRaaS), giving users a fully native Teams calling experience without ripping out the infrastructure they are already on. Three pathways available: PBX, Trunks, and Hosted Voice. No Microsoft Calling Plans required.

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Call2Teams Operator Connect

Become a Microsoft-accredited Teams calling provider — simply and at scale

Operator Connect lets service providers sell and deliver Teams calling directly from within the Microsoft Teams admin interface — without Direct Routing complexity. Dstny's Operator Connect platform is Microsoft-accredited and built on carrier-class voice infrastructure. Service providers can provision at scale, with simplified management and a fully white-label proposition for their customers.

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Call2Teams Mobile

Deliver Teams calling to your customers’ existing SIM. No new network

Your mobile customers run Teams, but their mobile number lives outside it. Call2Teams Mobile closes that gap: carrier-grade Teams calling delivered over your existing mobile infrastructure as an OTT layer, via your customers’ current SIM. No new devices. No new network. A differentiated Teams voice offer you can launch in weeks, on top of the mobile base you already have.

Your integration options

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Direct Routing

Allows organizations to connect their own telephony infrastructure to Teams, enabling users to make and receive calls using PSTN without the need for Microsoft Calling Plans.
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Operator Connect

Enables third-party operators to directly connect and market their calling services in Microsoft Teams, allowing organizations to use the telephony services of their preferred operator within the Teams environment.
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More than a platform, a growth partnership

Call2Teams gives you the technical routes to Teams voice. Dstny gives you everything around it — white-label branding, go-to-market support, and a partner model built for service providers who want to own the customer relationship, not just resell a product.

By the numbers

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320M+

Monthly active Teams users globally

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80+

Markets where Dstny delivers Teams voice

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 Integration routes — Direct Routing, Operator Connect, Mobile 

Frequently Asked Questions

Both let service providers deliver PSTN calling inside Microsoft Teams, but they work differently. Direct Routing connects existing telephony infrastructure — a PBX or SIP trunks — to Teams via a Session Border Controller, giving maximum flexibility for complex or multi-site customers. Operator Connect is Microsoft's marketplace model, where accredited operators deliver calling directly from within the Teams admin interface — simpler to manage and easier for customers to self-serve. Many operators offer both, depending on what their customers need.

Yes — and for most operators, that's the right approach. Different customers have different infrastructure, different Microsoft licensing, and different levels of technical complexity. Dstny's platform is built to support all three routes (Direct Routing, Operator Connect, and Mobile) under a single partner agreement, so you can match the right model to each customer without running separate platforms.

In most cases, yes — Teams Phone is the Microsoft add-on license that enables PSTN calling within Teams. However, Call2Teams Go removes this requirement for customers who are still on a PBX, letting them access Teams calling without the additional Microsoft license cost. It's worth discussing with your Dstny contact which of your customers this applies to.

Yes. The entire Call2Teams platform is designed to be delivered under your brand, with your pricing and your customer relationship. Dstny operates the underlying infrastructure — the carrier-grade voice network, Microsoft certifications, SBC connectivity, and ongoing maintenance — while you own the proposition your customers see.

Read more

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Ready to add Teams calling to your portfolio?

Tell us about your market and your customer base. We’ll show you which integration model fits, walk you through what the commercial model looks like in practice, and outline what a typical launch looks like for a partner in your position.