Remote data line monitor

Details Remote data line monitor Remote data line monitor

1974-08-19

1976-11-16

Robinson, Thomas A.

179 2A, 179 2DP, H04M 1106, H04Q 900

Patent

active

039925870

ABSTRACT:
A device that permits local or remote access to data circuits for the purpose of monitoring, testing and performing diagnostics. It may be used to issue commands to perform various functions whereby the device couples a given circuit to a telephone line in response to coded signals identifying the device and the circuit to be interrogated.

REFERENCES:
patent: 3383467 (1968-05-01), New et al.
patent: 3388375 (1968-06-01), Sloughter
patent: 3400378 (1968-09-01), Smith et al.
patent: 3516062 (1970-06-01), Spraker
patent: 3647971 (1972-03-01), Cushman et al.
patent: 3800090 (1974-03-01), Matena
patent: 3821705 (1974-06-01), Chertok et al.
patent: 3842208 (1974-10-01), Paraskevakos:

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