System and method for providing electronic business-card service using open service interface

A system for providing an electronic business card service using an open service interface in a next-generation convergence network, the system comprising:

• a business card information register receiving electronic business card information from terminals of presentities who provide electronic business cards and publishing the electronic business card information on an open service gateway, each of the electronic business card information including identification information and status information of the terminal of each presentity and the terminals being connected to the convergence network;
• a watcher register receiving identification information of a watcher who desires to use the electronic business card information from a terminal of the watcher, and registering the identification information to the open service gateway;
• and
• a business card information providing unit obtaining status information of a terminal of a specified presentity from the open service gateway, and transmitting the obtained status information together with identification information of the terminal of the specified presentity to a terminal of the watcher, upon a request for electronic business card information of the specified presentity from the watcher.