System and method to provide services from a communication network to a media-delivery network via a host device connected to the media-delivery network

The present invention relates to a system and method for integrating telecommunications and cable networks for the purpose of providing telephone services to a cable host device over a cable network. The methods include registering a cable host device to receive telephone services, downloading telephone service software to a cable host device, cable host device sign on to the telephone services, associating a telephone with a cable host device, temporarily registering a cable host device, and activating and deactivating telephone services for a cable host device. Also described are systems for connecting telephone and cable networks to enable telephone services to be provided by cable host devices.