SELECTING SYSTEM FOR ALTERNATIVE ROUTE

摘要

PURPOSE:To provide the communication route setting system capable of setting the optimal communication route without straying the packet in the network on the system of selecting the alternative route when there are plural communication routes to the objective network. CONSTITUTION:In the communication network with plural alternative routes to be connected with the specified other network through plural other network connection exchanges (incoming exchange devices), alternative station data including the station number of plural incoming exchange devices related to the plural alternative routes and the connection line number of each incoming exchange device are registered in a data register means 10 of the outgoing exchange device. When a call setting request comes from the terminal, a communication route information editing means 20 edits the communication route information being the information on the alternative circuit including the plural connection routes based on the alternative station data. The contents of the communication route information is put on the call setting request packet by an other exchange device alternative transmission means 50 and sent to the incoming exchange device. A alternative circuit selection means 30 of the incoming exchange device performs connection processing with the other network according to the communication route information and alternative processing to the other incoming exchange devices.