Abstract: Systems and methods for fusing, for a subscriber, a plurality of applications and subscriber data across a plurality of subscriber access devices are described. The system includes a fusion server coupled to a voice-over-IP telephony switch and a television EBIF server. The fusion server receives and stores the subscriber data such as a list of contacts. The fusion server receives a communication in a first format from a first subscriber access device such as a set-top box, and translates the communication from the first format to a second format. The first and second formats include at least two of session initiation protocol (SIP), hypertext transfer protocol (HTTP), voice-over-IP (VoIP), simple object access protocol over extensible markup language (SOAP/XML), remote procedure call (RPC), and enhanced tv binary exchange format (EBIF). The fusion server transmits the translated communication to a second subscriber access device such as a smart phone or tablet computer.