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Hitachi Ltd
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Hitachi Ltd
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Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP16214987ApriorityCriticalpatent/JPS645247A/en
Publication of JPS645247ApublicationCriticalpatent/JPS645247A/en
PURPOSE:To inexpensively and dynamically constitute a packet network by referencing storage information relating to a network terminator to which a destination terminal equipment belongs in receiving a call request from the terminal equipment to be connected and pretending an exchange line tentatively as a private line. CONSTITUTION:When a call request comes from a terminal equipment connected to its own terminator, a connection management table is retrieved and when the registration and connection are already finished and a channel is idle, the data is transferred in time division multiplex with the information transfer channel. If the destination does not exist in the connection management table or the band is deficient, a call control signal channel is used and the destination equipment is connected newly via an ISDN network 120 and the result is registered in the connection information management table and result of connection and the speed of the using information transfer channel are informed to other equipments already connected. Thus, the packet network is constituted dynamically without using any private line.
JP16214987A1987-06-291987-06-29Call setting control system
PendingJPS645247A
(en)
CIRCUIT ARRANGEMENT FOR CENTRALLY CONTROLLED TIME MULTIPLEX TELECOMMUNICATION SYSTEMS, ESPECIALLY PCM TELECOMMUNICATION SYSTEMS, WITH CONNECTING GROUPS CONNECTED TO A COUPLING PANEL.
Circuit arrangement for telecommunication exchanges, especially pcm time division multiplex telephone exchanges, with decentralized switching stages connected to a centralized switching network
Connection establishing method in broadcasting packet communication and packet communication system having function of automatically shunting a broadcasting packet
CIRCUIT PROVISION FOR TELECOMMUNICATION SWITCHING FACILITIES, ESPECIALLY TEMPORARY MULTIPLEXING TELEPHONE SWITCHING FACILITIES-PCM, WITH A CENTRAL COUPLING FIELD AND WITH DECENTRALIZED PARTIAL COUPLING FIELDS CONNECTED TO THE SAME.