Answer supervision system

Details Answer supervision system Answer supervision system

1982-11-10

1985-05-21

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

179 84VF, 3701103, H04Q 1104

Patent

active

045190720

ABSTRACT:
This disclosure depicts a telecommunication supervision system, such as a supervisory progress signal detector, for evaluating the status of an input signal from a communication channel. An output channel is outputted when the input signal exceeds the threshold reference, and the channel signal is analyzed to determine the identity of the particular cadence of the input signal.

REFERENCES:
patent: 3852718 (1974-12-01), DeLyria
patent: 4041458 (1977-08-01), Gravdahl
patent: 4152548 (1979-05-01), Horiki
patent: 4167004 (1979-09-01), Schenck et al.
patent: 4354264 (1982-10-01), Wurst
patent: 4370525 (1983-01-01), Francis
patent: 4405833 (1983-09-01), Cave et al.
patent: 4435803 (1984-03-01), Das et al.
patent: 4439639 (1984-03-01), Munter

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