IP telephony will offer real-world business benefits; already some municipalities use it to improve employee efficiency and reduce costs. However, the public switched telephone network (PSTN), because of the capital invested in it, its large installed base, and its solid reliability, will continue in use for many years. And carrier-based IP telephony services will not be universally available for some time. It thus appears the PSTN and IP networks will coexist for the foreseeable future. Few, if any, municipalities will make an abrupt switch to IP telephony, instead municipalities will look for flexible, practical migration strategies for deploying IP telephony. Most will take a phased approach to the converged voice and data communications services that IP telephony enables, evolving to voice over IP (VoIP) without a forklift upgrade of their existing voice and data infrastructure and without abandoning the PSTN. This paper shows how municipalities can use an Integrated Communications Platform (ICP) to implement an IP telephony strategy in three phases: IP trunking, voice-enabled IP endpoints, and system networking. Using these phases, municipalities can enhance applications in each stage and throughout the network.