Noise suppression circuit for switched telephone lines

Details Noise suppression circuit for switched telephone lines Noise suppression circuit for switched telephone lines

1976-01-29

1977-04-19

Cooper, William C.

H04B 302

Patent

active

040189953

ABSTRACT:
A circuit for suppressing noise pulses generated by the transfer of a charged telephone line from one supervisory circuit to another is provided. A capacitor is first connected to the telephone line and is charged to the voltage level appearing across the telephone line at the one supervisory circuit. The telephone line is then transferred from the one supervisory circuit to the other supervisory circuit and the capacitor is disconnected from across the line.

REFERENCES:
patent: 3391252 (1968-07-01), Germanton

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