Kabushiki Kaisha Toshiba

Motohisa Araki

Shuichi Sato

Toshio Murai

Toshio Nishida

Shinichi Kashimoto

Yasumasa Sasaki

Yoshimitsu Ebisawa

Katsunori Yoshihara

Shinichi Shishino

Kenichi Kitazawa

Kazuhiro Kobashi

According to one embodiment, a telephone system includes a plurality of telephone terminals, a first server apparatus and a second server apparatus. The first server apparatus includes a license authentication module and a transmission controller. The license authentication module performs license authentication by comparing a terminal ID included in a registration request with a terminal ID stored in the license memory. The transmission controller reads from the license memory a license authentication code corresponding to a telephone terminal, and transmits to the telephone terminal a license authentication code added check information.

Telephone system and server apparatus and control method used in telephone system

According to one embodiment, a server apparatus for executing communication connection between a first terminal being connected to a first communication network, and a second terminal being connected to a second communication network, includes a memory, an acquisition module and a controller. The memory stores an electric quantity table and a media determining table. The acquisition module acquires remaining information of the battery from the first terminal. The controller refers to the electric quantity table and the media determining table to select a communication media based on the acquired remaining amount information of the battery and consumed electricity by the first terminal. When a request for the first terminal is received, controller assigns the selected communication media to the first terminal, when the battery remaining amount of the first terminal varies during communication, the controller re-determines to change the communication media.

Assigning communication media to a terminal based on remaining battery amount

A communication system includes a first communication terminal connected to an internal communication network, a second communication terminal connected to an external communication network arranged in an area, and a connection device which connects the internal communication network and external communication network to each other, wherein the second communication terminal includes means for storing first transmission-destination identifying information included in the data area of a communication packet transmitted from the first communication terminal, means for comparing the first transmission-destination identifying information and second transmission-destination identifying information included in the header area of a communication packet, means for adding the second transmission-destination identifying information to the communication packet to be transmitted to the first communication terminal when the first transmission-destination identifying information and the second transmission-destination identifying information do not coincide with each other.

Communication system, communication terminal device used in communication system and communication method used in communication system

According to one embodiment, a communication method comprises receiving, in a first communication network for example, a packet from a terminal connected to a second communication network. The packet includes source address information therein. A determination is made whether the source address information had been changed from an original address used in the second communication network to a changed address used in the first communication address. The changed address being associated with the terminal is stored and the source address information including the changed address is provided to a terminal connected to the first communication network. Communications are supported using the source address information between the terminal connected to the first communication network and the terminal connected to the second communication network.

Communication method between communication networks

According to one embodiment, a communication system includes a first terminal to be connected to a first communication network, assigned a terminal ID and driven by power supplied from a battery, a server apparatus to be connected to a second communication network differing from the first network, to periodically confirm presences of the first terminal and a second terminal to be connected to the second communication network, and to communication-connect between the first and the second terminals in the case of presences thereof, and a controller which makes the server apparatus monitor that the first terminal is present on the first communication network by a second period longer than a first period monitoring that the second terminal is present on the second communication network.

Communication system and server apparatus and terminal apparatus

Each time one of a predetermined n number of authentication ports is accessed by a client terminal, a server checks to see if all of the n number of authentication ports have been accessed. If all of the n number of authentication ports have been accessed, the server determines that it has succeeded in authenticating the client terminal, opens its communications port to the terminal, and gives right of access to the client terminal.

Method of and apparatus for authenticating client terminal by making use of port access

A multimedia information system comprises first and second communication terminal apparatuses for exchanging information data using a common first communication protocol or first and second communication protocols which are different from each other, a first communication network for transmitting information data in accordance with a third communication protocol different from the first and second communication protocols, and first and second communication interface apparatuses for respectively connecting the first and second communication terminal apparatuses to the first communication network, the first communication interface apparatus comprises first conversion means for converting information data in accordance with the first and third communication protocols between the first communication terminal apparatus and the first communication network, and the second communication interface apparatus comprises second conversion means for converting information data in accordance with the second and third communication protocols between the second communication terminal apparatus and the first communication network.

Growing community of inventors

Akishima, Japan

Motohisa Araki