PURPOSE: To obtain a data communication system attaining connection of an opposite party with the dial operation from a terminal device by providing a connecting means converter provided with a register having a serial/parallel converting function for transmitting and receiving data signal, a register for transmitting and receiving a control signal and a means controlling them between data terminal devices and a network.
CONSTITUTION: A signal RS is set with a call request (state 1) from a start-stop data terminal device DTE1, the signal is written in a reception register R0 of a register 15, and the signal is read by an MPU16. The MPU16 writes "1" to a transmission shift register 13 so as to transmit continuously "1" from the said shift register 13. When a "1" signal on a line R is received from the network in response to it (state 2), it is received by a reception shift register 14 and it is read by the MPU16. The MPU16 conducts code conversion and parity bit conversion as required and writes a reception signal to the transmission shift register 13. Thus, numeric information is transmitted on a line T according to a clock from a clock circuit 17 via the said shift register 13.
SUZUKI MICHIO
TAKENOUCHI HIROO
KONASE TOSHIAKI
HIYAMA KUNIO
