Electronics and Telecommunications Research Institute

Kt Corporation

Sun Hwan Lim

Dae Ung Kim

Dong Man Jang

Jong Choul Yim

Ki Sook Chung

Chang Sup Keum

Hyun Kyung Yoo

Provided is an apparatus for managing zone presence, which manages presence information of a zone including a plurality of wireless access points, including: a presence managing unit receiving a subscription request from an application server and determining whether user terminal access information received from at least any one among the plurality of wireless access points corresponds to the subscription request; and an API processing unit providing the presence information to the application server when the user terminal access information corresponds to the subscription request.

Apparatus and method for managing zone presence

Provided is a method of providing a Credit Card Calling (CCC) service in a Customized Applications for Mobile networks Enhanced Logic (CAMEL)-based Universal Mobile Telecommunications System (UMTS). The method defines a method of controlling the CCC service that has not yet been defined in the existing UMTS CAMEL structure. Accordingly, it is possible to provide CCC service users with more differentiated, various features of the CCC service.

Method of providing credit card calling service based on camel in UMTS

Growing community of inventors

Daejeon, South Korea

Sun Hwan Lim