| 摘要 |
PURPOSE:To load data to a personal computer away from a terminal and to save a call tariff accompanied by the shortened communication time with a center station by transmitting a telesoft received from a center station via communication network to the personal computer. CONSTITUTION:The data communication system is composed of an ISDN communication network 1, a captain center station 2, a captain terminal 3, a personal computer 4, and channels (INS NET64) 5 to 7. The captain terminal 3 and the personal computer 4 are installed relatively distant places such as different stages in the same building, and connected to the ISDN communication network through the NET 64. This INS NET 64 is formed by two data channels of data transfer speed 64Kbps referred to as a B channel and a D channel exclusively for control signal in time-division multiplexing and the communication with two data communication equipments can be performed.
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