Home gateway device for e.g. home equipment, has conversion unit comprising application program interfaces and interfunctioning software layer that allows interfunctioning between two voice over Internet protocol telephony services

摘要

The device has a conversion unit comprising application program interfaces (21 - 24) for voice over Internet protocol (VoIP) telephony services and an interfunctioning software layer (25), where the interfaces comprise software stacks. The layer (25) allows interfunctioning between two voice over Internet protocol (VoIP) telephony services. The device converts one user`s data transmitted according to one of the services into another data according to the other service. The device transmits the latter data to a home gateway device of another user. Independent claims are also included for the following: (1) an interoperability method implemented by a home gateway device of a client device (2) a routing method for Internet protocol telephony services (3) a routing device for Internet protocol telephony services.