METHOD FOR ROUTING VOICE OVER INTERNET PROTOCOL CALL IN VOICE OVER INTERNET PROTOCOL GATEWAY AND VOICE OVER INTERNET PROTOCOL ROUTING DATABSE THEREFOR

摘要

PURPOSE: A method of performing a VoIP(Voice over Internet Protocol) call routing of a VoIP gateway is provided to adaptively configure a VoIP call routing DB to sequentially store IP addresses in IP address fields of IP tables, and to perform a VoIP call routing by using the DB, thereby efficiently using the IP tables. CONSTITUTION: When an outgoing call request enters a VoIP gateway(300), a VoIP processor checks a destination number(302). The VoIP processor confirms whether an access code of an originator is included in a VoIP call routing table, and is valid(304). If the access code is included in the table and is valid, the VoIP processor retrieves IP terminals or IP addresses of a VoIP gateway up to a finish point from a start point of an IP table corresponding to the access code(306). If a link test and a channel status are transceived with a remote VoIP gateway and a VoIP terminal, the VoIP processor checks whether a VoIP call is available to the VoIP gateway or the VoIP terminal(308). If so, the VoIP processor processes a normal outgoing call(310) and completes the procedure(314). If not, the VoIP processor performs a call release procedure(312).