Patent ID: 8055699

Claim:
A method for interfacing in a communication system, the method comprising the steps of: (1) receiving, by a Universal Service Interface (USI) server, an event, which is processed according to information managed by a second system providing a second service, from a first system providing a first service; and (2) providing, by the USI server, in response to the received event, an interface between the first system and the second system in order to provide the received event to the second system so that the second system processes the event according to the information corresponding to a mobile station and managed by the second system, wherein, when the first system is an Internet Service/Content Provider (IS/CP) system comprising an application server, the second system is a mobile communication system that includes the USI server, and the event is an authentication request message, step (2) comprises: performing authentication of the application server by the USI server; and transmitting an authentication response message including a result of the authentication to the application server by the USI server, wherein the authentication request message comprises fields defined by: Field Data Type ISPname String Account String Password String wherein a data type of the Internet Service Provider (ISP) name field, the Account field, and the Password field is string, the ISP name indicates a name of the application server having transmitted the request for authentication to the USI server, the Account indicates an account of the mobile station, and the Password indicates a password of the mobile station, and the authentication response message includes a field defined by: Field Data Type resultCode Integer wherein a data type of the resultCode field is integer, and the resultCode indicates the result of the authentication performed by the USI server.