Nec Corporation

Akihisa Kurashima

Kazuhiro Sakata

Tetsuo Yama

Hideaki Tsuoka

Shigeru Tagashira

Masato Yoshikawa

Junichi Matsuda

Shigehiro Ichimura

Akira Uematsu

Toru Kaji

In order to provide a control apparatus that enhances security of a radio communication system run by a user, the control apparatus including an acquisition section and a registration section, the acquisition section being configured to acquire subscriber information in which at least authentication information is encrypted, and the registration section being configured to register the acquired subscriber information in a database included in a core network. The control apparatus may further include an authentication section configured to decrypt the encrypted authentication information, and use the decrypted authentication information and authentication information included in a connection request from a terminal apparatus to the core network to authenticate the terminal apparatus.

Control apparatus, radio communication system, control method, and recording medium having recorded program

A control apparatus that implements access control of a user in a private radio communication network is provided. The control apparatus includes an obtaining unit and a verifying unit. The obtaining unit obtains subscriber information related to a subscriber in a private radio communication network. The verifying unit performs authentication processing for a terminal apparatus requesting connection to the private radio communication network, based on authentication information included in the subscriber information. The verifying unit verifies access authority for the terminal apparatus requesting the connection, based on information different from the authentication information included in the subscriber information when the authentication processing for the terminal apparatus requesting the connection is successful.

Control apparatus, radio communication system, control method, and program

Provided is an information processor that receives a request for initiating a call between a phone on the calling side and a phone on the called side and performs call transmission with respect to the phone on the calling side and the phone on the called side, the information processor including: a registration unit that registers a list of a plurality of IP address conversion servers performing IP address conversion needed for a call between the phone on the calling side and the phone on the called side; a selection unit that selects, on the basis of the location of the phone on the calling side or the phone on the called side, the IP address conversion server to be used from the list that is registered in the registration unit; and a call execution unit that executes, using the selected IP address conversion server, a call while performing IP address conversion for voice packets exchanged between the phone on the calling side and the phone on the called side.

Information processor, information processing method and non-transitory storage medium storing information processing program

A telephone relay apparatusreceives a connection request from a first telephone terminalto a second telephone terminal. The connection request includes phone numbers of the first telephone terminaland the second telephone terminal. The telephone relay apparatusstores phone numbers of a plurality of telephone terminals and codec information that indicates types of audio codecs of the telephone terminals so that the phone numbers and the code: information correspond to each other. When connecting to the first telephone terminal, the telephone relay apparatusreads out codec information that corresponds to the phone number of the second telephone terminal, and then transmits the read-out codec information to the first telephone terminal. The first telephone terminalperforms a call process using an audio codec that corresponds to the codec information transmitted from the telephone relay apparatus

Telephone relay apparatus, telephone relay method, and program

A real number and a published number are allocated to a call origination telephone terminal. The real number is a telephone number used in the case of directly connecting to the telephone terminal, and the published number is a number published for a third party as a telephone number of the telephone terminal. The telephone relaying apparatusstores the real number and the published number in correlation with each other for each of a plurality of telephone terminals. When receiving a first call in which the real number of the call origination telephone terminalis a calling number, the telephone relaying apparatusreads out the published number corresponding to the real number of the call origination telephone terminal. The telephone relaying apparatusmakes a second call in which the published number of the call destination telephone terminalis a calling number, and performs a relaying process between the call origination telephone terminaland the call destination telephone terminal

Telephone relaying apparatus, telephone relaying method, and program

A telephone relaying apparatusreceives a request for connection to a second telephone terminalfrom a first telephone terminal. The connection request includes telephone numbers of the first telephone terminaland the second telephone terminal. The telephone relaying apparatusstores a real number that is a telephone number used in the case of directly connecting to each telephone terminal and a published number that is a number published for a third party as a telephone number of the telephone terminal in correlation with each other. When receiving the connection request, the telephone relaying apparatusmakes a first call with respect to the first telephone terminal, and a second call with respect to the second telephone terminal. In a case where the telephone number, which is included in the connection request, of the second telephone terminalis the published number, the telephone relaying apparatusreads out the real number of the second telephone terminal, and then makes a second call with respect to the second telephone terminal

When a call from a call terminal to a called terminal is received, a relay processing device transmits calling terminal specific information that specifies the calling terminal to the called terminal by using data communication. The calling terminal specific information, for example, is a phone number of the calling terminal, but may be a user's name of the calling terminal. The called terminal transmits to the relay processing device, connection information that indicates whether or not to respond to the call from the calling terminal. The transmission of the connection information may be performed by any one of voice communication and data communication. The relay processing device connects the phone call between the called terminal and the calling terminal or cuts off the connection between the calling terminal and the relay processing device according to the connection information.

Relay processing device, communication terminal, relay processing system, relay processing method, and program

A call relay server comprises a usage status management unit that, when a user starts using a system from a main terminal and the notification is received from the main terminal and if a sub terminal related to the main terminal is registered, confirms the user via the main terminal whether to delete the registration of the sub terminal and, if a deletion instruction is received, deletes the registration of the sub terminal.

Telephone conversation relay server, voice telephone conversation system, and voice telephone conversation relay method

A second device () has a first virtual terminal and a second virtual terminal. The second device () switches the access point of a third telephone terminal () to the first virtual terminal and switches the access point of a second telephone terminal () to the second virtual terminal by control of a first device (). Then, the first virtual terminal is put on hold. Then, the first virtual terminal calls the first telephone terminal by an outgoing call for forwarding to a first telephone terminal (). Then, the first device () connects the first telephone terminal () to the third telephone terminal ().

Telephone relay device, method of relaying telephones, and program therefor

The present invention provides a telephone relay apparatus in which even in a telephone terminal which cannot recognize a subaddress, it is possible to attain information to judge whether or not the call is to be started. A telephone relay apparatuspossesses a plurality of call transmission telephone numbers (proxy telephone numbers) to uses a telephone number (user telephone number) properly to transmit a call to a telephone terminalon the call reception side according to a rule prescribed in advance, which enables the telephone terminalon the call reception side to identify the type of the call via the telephone relay apparatusbased on the call transmitter telephone number (notification telephone number).

Telephone relay system, telephone relay apparatus and telephone relay method

The callback system comprises: a transmitting terminal which comprises a storing section configured to store an attribute data which is uniquely determined and given, and a transmission request processing section configured to transmit a callback request including the attribute data for starting a callback communication; a database configured to relate and store a callback transmission source telephone number used in the callback communication for each attribute group prepared by collecting a plurality of the attribute data; a charging target judging section configured to receive the callback request and extract the callback transmission source telephone number which corresponding to the attribute data included in the callback request, as a selection callback transmission source telephone number from the database; and a transmission processing section configured to carry out the callback communication with the transmitting terminal, with the selection callback transmission source telephone number as a transmission source telephone number.

Callback system, transmitting terminal, telephone relay server, callback method and callback program

The present invention realizes a telephone system which enables calling with ease from an outside line to a desired extension telephone terminal in an extension telephone network having a plurality of representative numbers. The telephone control device connected to a plurality of telephone terminals and a plurality of telephone exchange devices, includes a designation accepting unit which accepts designation of a calling destination telephone number from a telephone terminal, a connection setting unit which selects a telephone exchange device from the plurality of telephone exchange devices based on a calling destination telephone number accepted by the designation accepting unit to execute connection setting at the selected telephone exchange device so as to connect a call from a telephone terminal which designates the calling destination telephone number to the calling destination telephone number, and a telephone number information transmission unit which transmits telephone number information of a telephone exchange device selected by the connection setting unit to a telephone terminal which designates a calling destination telephone number.

Telephone control device, telephone control method, telephone control program, telephone terminal, telephone calling method, telephone calling program and telephone control system

The propagation time () of signals between a terminal () and a base station () is calculated from the round-trip time () of signals between the terminal () and the base station () and the turn-around time () from the reception by terminal () of a signal from base station () until the transmission of the signal to the base station (). The propagation time () of signals between the terminal () and another base station () is similarly calculated. The difference between the propagation times (and) and the arrival time difference () that is calculated in the terminal () are then compared to calculate the transmission time difference () between the base stations (and).

Transmission time difference measurement method and system

In a content delivery system, a gatekeeping apparatus is connected to a network. Prior to the transmission of a request message to a content server, a user terminal transmits an enquiry message to the gatekeeping apparatus. In response, the gatekeeping apparatus makes a decision as to whether or not a content can be retrieved from the content server and performs control on the transmission of the request message according to the decision. If the decision indicates that a content can be retrieved, the user terminal transmits the request message to the content server. In a preferred embodiment, the gatekeeping apparatus makes comparison between user's preference data and server's policy data and determines whether the requested content can be retrieved from the server. A cache memory may be provided in the user terminal or gatekeeping apparatus to store past decisions regarding requested contents.

Content delivery system

A location information conversion device which can ensure privacy protection of a search object. Upon receiving a request with a designated accuracy from an input/output section, a location information generating section acquires location information from a location measurement section and supplies the location information to an accuracy adjustment section, together with the designated accuracy. The accuracy adjustment section converts the location information into location information of an accuracy equal to or lower than the designated accuracy and returns the resulting location information to the location information generating section. The location information generating section sends the location information whose accuracy has been converted to the requesting party via an input/output section. This ensures protection of privacy, since the location information about a search object is converted into location information of an accuracy equal to or lower than the designated accuracy.

Growing community of inventors

Tokyo, Japan

Akihisa Kurashima