Abstract: The present invention relates to a communication system, and the invention specifically provides a contents server that appropriately stores media contents from group users in a PoC Service and a conference service. The contents server includes: a recording unit that records media information from plural users in a communicatable state participating in a predetermined group, for each group; a detecting unit that detects a communicatable state or an uncommunicatable state of each participating user, at each predetermined time; and a deleting unit that deletes confirmed media information already recorded in the recording unit, upon detecting that all the participating users are in the communicatable state.

Abstract: The present invention relates to a communication system, and the invention specifically provides a contents server that appropriately stores media contents from group users in a PoC service and a conference service. The contents server includes: a recording unit that records media information from plural users in a communicatable state participating in a predetermined group, for each group; a detecting unit that detects a communicatable state or an uncommunicatable state of each participating user, at each predetermined time; and a deleting unit that deletes confirmed media information already recorded in the recording unit, upon detecting that all the participating users are in the communicatable state.

Abstract: Internet Protocol (IP) telephone number information system performs for the telephone number in the existing communication systems. A number information server in the system has a region information database representing an IP telephony service area for each of a plurality of Internet Service Providers (ISPs) having a corporate information database. The number information server specifies one of the plurality of ISPs from the region information database, based on a search condition input from a user terminal connected to the Internet. The specified ISP searches the corresponding corporate information database, and obtains number information matching the search condition. The number information server notifies the user terminal of the number information obtained from searching the corporate information database, in response to the search condition input from the user terminal.

Abstract: In an intelligent network system, a service subscriber can remotely execute a procedure, such as a registration or a change of the contents of service, which is performed by an operator in the conventional system, through an external terminal by him or her. The intelligent network system includes a service control point that controls services and provides a database storing data relating to a service subscriber; a service management system, which monitors load on the service control point, stores and manages data relating to the service subscriber; external terminals owned by the service subscriber; and a remote access management system, which is interfaced with the external terminal. The service management system updates and records the data of the updated subscriber's service, which is transmitted through the remote access management system, in the database of the service control point, when the service control point does not over-load.

Abstract: In an intelligent network system, a service subscriber can remotely execute a procedure, such as a registration or a change of the contents of service, which is performed by an operator in the conventional system, through an external terminal by him or her. The intelligent network system includes a service control point that controls services and provides a database storing data relating to a service subscriber; a service management system, which monitors load on the service control point, stores and manages data relating to the service subscriber; external terminals owned by the service subscriber; and a remote access management system, which is interfaced with the external terminal. The service management system updates and records the data of the updated subscriber's service, which is transmitted through the remote access management system, in the database of the service control point, when the service control point does not over-load.

Abstract: A service management system is adapted to an intelligent network system having a plurality of service switching points making service inquiries, and a plurality of service control points coupled to the service switching points and controlling services. The service management system is coupled to the plurality of service control points and centrally manages databases of the service control points, and includes a process registration information table for registering process information of a plurality of processes related to the service control points and the service management system. The process registration information table is used to manage contention among the processes.