Fujitsu Corporation

Kazutoshi Kobayashi

Takashi Ueno

Hironobu Oshika

Takashi Kaneko

Tadaaki Tanaka

Shinichi Araya

Masaaki Nagasaka

Akira Obata

Shouichi Kimura

Keita Kobayashi

Shoichi Kimura

Shinjirou Fujii

Sachiko Ishimoto

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.

Contents server and contents server system

A system utilizing information on a user position via an IP network. The system includes storage unit for storing information for identifying a date and time when a user terminal has become communicable in a communication area provided by a predetermined radio LAN access point, information identifying the access point, and information identifying the user, and utilization unit for utilizing the information stored in the storage unit.

User position utilization system

A storing unit stores a regular telephone number of a user and a provisional telephone number corresponding to the regular telephone number. An acquiring unit acquires a provisional telephone number of a receiver and a regular telephone number of a caller who called at the provisional telephone number of the receiver. A searching unit searches a regular telephone number corresponding to the provisional number of the receiver from the storing unit. A call establishing unit establishes a call between the caller and the receiver corresponding to the regular telephone number searched.

Method and apparatus for managing telephone number, and computer product

An apparatus establishes a common signal channel with a flexible channel capacity for effective utilization of the total traffic capacity between two exchanges or stations which are interconnected by the common signal channel. A traffic detecting unit in one of the exchanges detects a traffic volume in the common signal channel between the exchanges. Based on the detected traffic volume, a channel capacity change determining unit determines whether a channel capacity to which the common signal channel is set needs to be changed or not and determines a new channel capacity to be established for the common signal channel if the channel capacity needs to be changed. If the channel capacity to which the common signal channel is set needs to be changed, a channel capacity change executing unit executes a change in the channel capacity to which the common signal channel is set based on the established new channel capacity.

Apparatus for establishing common signal channel

Growing community of inventors

Kawasaki, Japan

Kazutoshi Kobayashi