Microsoft Direct Routing is a powerful solution that allows organizations to connect their existing telephony systems (like SIP trunks or PBX) to Microsoft Teams, enabling users to make and receive external phone calls directly within the Teams platform. This service is a part of Microsoft’s Phone System and offers businesses the flexibility to choose their own telecom provider, while fully integrating voice calling with Microsoft Teams.

Key Benefits of Microsoft Direct Routing

1. Cost Efficiency & Flexibility
   Direct Routing gives businesses control over their communication expenses. Instead of being locked into Microsoft’s Calling Plans, companies can negotiate better rates with their preferred telecom provider. It also supports global deployment, making it easier to manage communication across multiple locations.

2. Seamless Integration
   Organizations can continue using their existing phone numbers and hardware, while enjoying Teams’ collaboration features. Microsoft Direct Routing bridges the gap between legacy systems and modern unified communications, minimizing disruption and maximizing ROI on existing infrastructure.

3. Scalability & Security
   Direct Routing scales easily to meet the needs of growing organizations and supports secure voice communication through encryption and compliance with industry standards. IT administrators benefit from centralized management via the Microsoft 365 admin center.

How It Works
Microsoft Direct Routing works by connecting a Session Border Controller (SBC) between your telecom provider and Microsoft Teams. The SBC ensures compatibility and security as calls are routed through Teams. Certified SBCs from providers like AudioCodes, Ribbon, and Oracle are commonly used in these setups.

Conclusion
Microsoft Direct Routing is an ideal choice for businesses seeking a flexible, cost-effective, and secure way to enable PSTN calling within Microsoft Teams. Whether you're a small company looking to modernize communications or a large enterprise with complex telephony requirements, Direct Routing offers a scalable and customizable solution. By leveraging this approach, companies can enhance productivity and ensure a seamless voice experience across their entire organization.