Public Switched Telephone Network (PSTN) serves as the foundational network of infrastructure and services for telecommunications. This comprehensive system includes traditional phone lines, fiber optics, and cellular networks. Despite the growing adoption of modern communication solutions, most businesses still rely on PSTN connectivity for their everyday operations.

Microsoft-approved operators, often referred to as Operator Connect Partners, are vendors that have undergone a rigorous evaluation process and received formal approval from Microsoft to participate in the Operator Connect program. By partnering with these certified operators, businesses can ensure a consistently high level of service quality and reliability in their communication solutions.

This term signifies that your chosen operator is responsible for managing all technical aspects of your PSTN infrastructure. In the event of any issues or if you require technical support, your operator should be your first point of contact, streamlining the process of resolving any concerns.

This concept, popularized by Microsoft, promotes both Direct Routing and Operator Connect to enhance communication and collaboration within organizations. Essentially, it allows businesses to retain their existing carrier contracts and relationships while seamlessly integrating PSTN services with Microsoft Teams. This flexibility can be particularly beneficial for organizations looking to streamline their telecommunications without disrupting established partnerships.

Enhanced 911, commonly known as E911, is a critical service responsible for routing emergency 911 calls from various devices, including smartphones, VoIP phones, and wireless devices. This service provides vital GPS coordinates and enhanced location data, which are legally required in many jurisdictions to ensure accurate and timely emergency response.

These are the standard domestic and international calling plans offered by Microsoft for PSTN solutions that do not utilize Operator Connect. Engaging with these plans requires specific licensing to enable Microsoft Teams for telephony services, ensuring that organizations can take full advantage of Microsoft’s communication capabilities. Understanding these plans can help businesses make informed decisions about their telecommunication strategies.