DYNAMIC ROUTING BASED CALL PATH SETUP METHOD OF ASYNCHRONOUS TRANSFER MODE SWITCHING SYSTEM AND RE-SETUP METHOD

摘要

PURPOSE: A dynamic routing based call path setup method of an ATM(Asynchronous Transfer Mode) switching system and a re-setup method are provided to operate a terminal interface and an inter-exchange interface together in a distributed switching system. CONSTITUTION: If a PNNI(Private Network/Network Interface) signaling protocol part(22) receives a call setup message, the PNNI signaling protocol part(22) transmits QOS(Quality of Service) information to a PNNI call path selection part(26) of a central processing system(25). The PNNI call path selection part(26) transmits a call path suitable for a required characteristic to a connection server system(21) in the shape of a DTL(Designated Transit List), referring to a routing information database(27). The PNNI signaling protocol part(22) processes the call through a defined signaling message.