Microsoft Teams Direct Routing and E911 services are outlined, emphasizing the differences and advantages over Microsoft Calling Plans for organizations seeking more control and scalability. Direct Routing allows integration with a carrier of choice for PSTN access, requiring a Microsoft Teams License with Phone System, a certified Session Border Controller (SBC), a SIP Provider, and an E911 Provider. Bandwidth offers a comprehensive SIP and Dynamic E911 solution, facilitating call routing and emergency services by accurately providing caller location information. Dynamic E911 supports fluid location updates, crucial for mobile users or those working remotely, by using network and WiFi information to ensure accurate emergency response. The Bandwidth solution includes flexible billing, a holistic approach to Direct Routing and E911, and migration support, with best practices recommended for a smooth transition, including infrastructure assessment and user training. The document also covers the importance of provisioning accurate emergency addresses within Teams and how Bandwidth's services can enhance call quality and cost management, while offering ongoing support to ensure successful implementation.