摘要:
Whenever there is an incoming call to a terminal accommodated by a terminating exchange, the terminating exchange creates incoming-call data, which contains at least the terminating subscriber's number, the originating subscriber's number and the communication time, and transmits the incoming-call basic data to a communication center. The communication center accumulates the incoming-call basic data and, in response to issuance of an output request, creates and outputs an incoming-call logging list for the requesting user on the basis of the incoming-call basic data. Further, secondary data, which includes at least the names and addresses of calling parties, is registered in a data base beforehand in correspondence with subscriber's numbers. The secondary data is combined with the incoming-call basic data to create incoming-call information, which is then stored in memory. In response to issuance of the output request, the incoming-call logging list of the requesting user is outputted based upon the incoming-call information.
摘要:
The invention provides a picture phone terminal and an exchange for use, for example, with a picture phone interrupt service system for a broadband ISDN which makes it possible to confirm, when an incoming call arrives, during communication between a plurality of picture phones, at one of the picture phone terminals from a third picture phone terminal, the incoming call during the communication without disturbing the communicating condition at present. The picture phone terminal or the exchange comprises means for receiving image information from a second picture phone terminal with which the picture phone terminal is communicating, means for receiving interrupt notifying image information representing that an incoming call from a third picture phone terminal has arrived, image composing means for composing the image information from the second picture phone terminal with which the picture phone terminal is communicating and the interrupt notifying image information from the third picture phone terminal, and display means for displaying the composite image information composed by the image composing means.
摘要:
An information distribution system includes a node station and a plurality of terminal devices connected through transmission lines with the node station. The node station includes a distribution information storage unit for storing information which is to be distributed to the plurality of terminal devices, and a re-transmission request response unit for re-transmitting information in question in response to requests from the plurality of terminal devices. Each of the terminal devices includes an error checking unit for checking transmission failure in the data transmission based on the received information. The transmitted information is divided into a plurality of blocks, and, after the completion of reception of all block-form information, a re-transmission of information is requested, and based on this request, a re-transmission of information is carried out.
摘要:
Disclosed is a ring transmission system which incorporates both a narrowband network and a broadband ISDN network. The system comprises a plurality of nodes connected to a ring line. Each node comprises a drop/insert unit for dropping/inserting data by the use of a communication channel allocated to the node and an allocation changing circuit, whereby, a plurality of independent narrowband and broadband exchange networks are connected to a single ring transmission line.
摘要:
An accounting system for an ATM network includes a first unit for detecting a VCI (Virtual Channel Identifier) in an ATM cell and information type data contained in the ATM cell. The information type data indicates the type of information contained in the ATM cell. A second unit outputs an accounting coefficient related to the information type data detected by the first unit. A third unit generates a cell arrival signal in response to arrival of each ATM cell having an identical VCI value and generates accounting data by using the accounting coefficient and the cell arrival signal.
摘要:
A self-routing switching system including a route setting unit (10) which receives transmission information and identification information given from incoming lines and forms, from the identification information, control information for setting a path to one outgoing line to which the transmission information is to be transferred, and a self-routing speech path (20) which can form a plurality of paths and which selects the most suitable one therefrom by the control information and autonomously guides the transmission information to the destination outgoing line.
摘要:
A header driven packet switching system includes packet header processing circuits for controlling the routing and header rewriting of data packets. The packet header processing circuits are the hunted type and are arranged independently from incoming lines so that a packet switching capacity of the system will be improved, a high speed packet switching realized, and an improved flexibility of the system against traffic congestion will be obtained. In addition, it is possible to arrange the packet header processing circuits according to traffic conditions.
摘要:
In a header driven type packet switching system, all incoming and outgoing lines required for the system are divided into groups to constitute a two stage structure of incoming and outgoing modules, which are prepared for the respective incoming and outgoing line groups. In each incoming module, outgoing module and outgoing line, information is given to packets, and the data packets are successively transferred from the outgoing modules to the corresponding outgoing lines. Thus, the system can flexibly cope with an increase of the incoming lines and the number of calls.
摘要:
A picture distribution service system carries out a distribution control of picture information service in a broadband transit switching network having a hierarchical structure. The system comprises a plurality of transit switches for switching transit lines through which picture information is transmitted from a source and distributed by a center switch, a first trunk part provided for each of the transit switches for distributing the picture information from the center switch to the transit lines, a plurality of subscriber switches for switching subscriber lines through which the picture information from each of the transit lines is transmitted to a plurality of subscriber terminals, and a second trunk part provided for each of the subsriber switches for distributing the picture information from each of the transit switches to the subscriber lines.
摘要:
A telephone terminal capable of sending and receiving images and sounds, having a movable camera for obtaining images of the surrounding area and a sound-collection microphone for collecting surround sounds, automatic answering circuitry which automatically responds to a call received from a calling terminal and which starts the transmission of surrounding area images and sounds, and a transmission switching circuit which, upon response by the automatic answering circuitry, switches connection from the fixed microphone and handset for TV telephone use to the movable camera and sound-collection microphone.