| 摘要 |
PURPOSE: A method of supplying a VoIP(Voice over Internet Protocol) service is provided to perform the VoIP service between a PSTN and an Internet network by using a directory server for managing authentication information of a VoIP service application and a user and location information of a service provider, thereby satisfying users' requests. CONSTITUTION: An integrated voice service device outputs a message of outputting user identifying information to a user terminal(S100). A java GW(GateWay) APP(APPlication) analyzes a received request(S102), and searches a java APP of many java APPs, and activates the java APP(S104). The java APP requests searching a location of a VoIP service providing server(S106). The java APP transmits an authentication parameter to a directory server to request the server to perform an authentication procedure(S106). The directory server compares prestored authentication information with the received authentication parameter to perform the authentication procedure(S108). If the authentication procedure is completed, the directory server transmits a success message to the java APP, and supplies location information of the VoIP service providing server(S112). The java APP connects the integrated voice service device with the VoIP service providing server(S114). The integrated voice service device makes the user terminal use the VoIP service(S116).
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