System and apparatus for connecting a telecommunications device to a packet-switching communications network

摘要

A system for connecting a telecommunications terminal or a private branch exchange to a packet-switching communications network, and to an interface unit, a communications terminal and a private branch exchange for connection to a packet-switching communications network. The system has at least one telecommunications device, for example a telephone or a private branch exchange, which can be connected to a line-switching communications network. Furthermore, this system contains an interface unit which is connected both to the packet-switching communications network and to the telecommunications device. The interface unit converts at least some of the data intended for the subscriber line using the user-switching communications network into data of a line-switching communications network.