Abstract: A switching system performs internally a terminal process for an AO/DI traffic directly without using a packet handler and includes a subscriber switching subsystem to thereby communicate with Internet through a router within the subscriber switching subsystem. Therefore, the switching system simplifies an ISDN call process procedure for the AO/DI service and prevents a switching resource within the switching system from being inefficiently managed to thereby provide much more subscribers with the AO/DI service.

Abstract: An integrated services digital network (ISDN) switch capable of switching packets in each of access switching subsystems, includes a plurality of access switching subsystems including a time switch, for providing interfaces with subscriber equipments by using the ISDN standard interfaces; an interconnection network subsystem including a space switch, connected to the access switching subsystems, for performing functions such as space switching and network synchronization; and a central control subsystem, connected to the interconnection network subsystem, for supervising and controlling overall functions performed in each subsystem in the ISDN switch.