Communication device having coupling means

Details Communication device having coupling means Communication device having coupling means

1980-12-05

1983-12-20

Miller, C. D.

179 2C, H04M 1100

Patent

active

044219504

ABSTRACT:
A communication device, wherein a state of coupling of a signal to be emitted and signal to be received is controlled by mounting and dismounting of a coupler, then the signal to be emitted is introduced as an input from an input device of a terminal device, while the signal to be received is produced as an output to an output device of the terminal device, and further, at the time of mounting the coupler, communication is carried out with communication lines through the coupler, while, at the time of dismounting the coupler, the information input from the input device is recorded or displayed by the output device.

REFERENCES:
patent: 3889062 (1975-06-01), Epstein
patent: 3932709 (1976-01-01), Hoff et al.
patent: 4291198 (1981-09-01), Anderson et al.

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