A system and method for providing telephone services to a secure facility from an external, centralized call platform. An embodiment of the system includes a call processing center that is external to the facility and includes a plurality of computer clusters, and is configured to route communications to and from a router located at the secure facility. Having a majority of the system located outside the facility reduces equipment requirements at each individual facility, improves security and uptime, and provides more efficient management and expansion of the call platform.