Interoperable communications between any land mobile radio, on virtually any LMR Network, standards compliant mission critical push to talk devices on smartphones connected to broadband/LTE networks, and proprietary push to talk over cellular devices can all communicate with each other for the first time. As MCPTT deployments continue, we're learning the use cases, advances in the technology that creates interoperable sessions across different networks, and the next set of capabilities that need innovation to further mission critical communications. The panel will also summarize the lessons learned from the initial deployments of a Broadband Interoperability Platform.