WWT and Ribbon Communications have partnered to enhance voice and interoperability solutions for Microsoft Teams. This collaboration leverages Ribbon's Session Border Controller (SBC) to enable phone services via the Public Switched Telephone Network (PSTN) and ensure interoperability with on-premises Private Branch Exchanges (PBXs) such as Cisco Unified Communications Manager (CUCM). The partnership aims to provide seamless integration and design considerations for enabling voice capabilities in Microsoft Teams environments, thereby supporting hybrid work and unified communications initiatives.