Patent ID: 6839425

Claim:
An adaptive subscriber line interface system for use in a telecommunications network providing a plurality of telecommunications services, the interface system being operative to provide an adaptive interface between a node of the network and a currently connected one of a plurality of different types of end user devices, the currently connected end user device being adapted for communication via a corresponding one of the services provided by the network, the interface circuit comprising: a digital signal processor operatively coupled for communication via the network directly with a central office terminal and through a single adaptive interface circuit between said digital signal processor and the currently connected end user device; said adaptive interface circuit having memory means for storing, a first interface mode program for configuring said digital signal processor to provide a first set of interface functions associated with a first one of the services, a second interface mode program for configuring said digital signal processor to provide a second set of interface functions associated with a second one of the services, and a detection program for configuring said digital signal processor to automatically determine the corresponding service required by the currently connected end user device based on signals received from the currently connected end user device via said adaptive interface circuit; and said adaptive interface circuit including a two-wire to four-wire conversion circuit operable in a first service mode if the currently connected end user device requires said first service, and also being operable in a second service mode if the currently connected end user device requires said second service.