Telephone testing equipment

Details Telephone testing equipment Telephone testing equipment

1976-07-09

1978-04-04

Olms, Douglas W.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

179 84VF, 307261, 1791752A, H04M 1106

Patent

active

040829200

ABSTRACT:
An adapter circuit for converting dialing generated tone bursts on a telephone line into DC pulses of a length equal to the tone burst length so that the percent break may be measured. The DC pulse is initiated when the tone burst reaches 50% of its full value and terminated when the tone burst decays to 50% of its full value.

REFERENCES:
patent: 3223929 (1965-12-01), Hofstad et al.
patent: 3569841 (1971-03-01), Richman
patent: 3584237 (1971-06-01), Stephens

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