Since the rise of VoIP and UCaaS solutions, Microsoft Teams+PBX integrations have emerged as the most promising growth engine for service providers. By combining Teams’ native collaboration with robust business telephony, operators can meet growing demand for unified and simplified solutions.
The opportunity behind Teams adoption
Microsoft Teams adoption has surged since the pandemic, driven by hybrid work. According to a 2025 Metrigy study, 62 % of organizations already have Teams through Microsoft 365, and 71.8 % plan to integrate their UC and contact center applications for a seamless user experience. Teams therefore has a massive installed base, and customers want it to become their central communications hub.
Adoption of Teams Calling remains low
Despite Teams’ popularity, only one-third of businesses deploy Teams Phone, and most continue to use a separate PSTN system. About 25 % of voice-enabled organizations use an external system, leaving 75 % of users dependent on telephony outside Teams. As a result, three-quarters of businesses do not yet have a true PBX‑Teams integration.
The consequences of a fragmented setup
Businesses, especially SMEs, are left with disconnected workflows: meetings on Teams, calls through a separate PBX, and customer data in a CRM. This fragmentation leads to lost productivity, high call costs, doubled operational complexity, and technical barriers (Direct Routing, SBC, certificates).
A strategic moment for service providers
With most businesses still operating in fragmented environments, ITSPs, MSPs, and voice resellers have a clear opportunity: offer seamless Teams‑PBX integration to eliminate the jump between platforms, reduce call costs, and centralize management. For SMEs, an integrated solution is not only attractive but transformative.
How to stand out in the Teams+PBX market
Customers now demand intuitive and reliable solutions. The best integrations are characterized by: a native experience (simple dialer and call reception), instant notifications, integrated PBX tools, real-time presence synchronization, and interface customization. Beyond the user experience, usage-based billing and transparent subscriptions provide a competitive advantage.
Yeastar’s native telephony system
Yeastar P‑Series PBX offers native integration with Teams, delivering business telephony without a Teams Phone license and with a single number. Whether through direct integration or Call2Teams, customers benefit from an integrated interface, call pop-ups, IVR, routing, queues, and access to recordings from Teams. Integration with Microsoft Entra ID ensures automatic user synchronization and customizable presence.
The Yeastar team supports businesses and integrators in assessing their needs, selecting an architecture, and preparing for deployment.
