Telephone system and method operated from central office...

Details Telephone system and method operated from central office... Telephone system and method operated from central office...

H - Electricity

04

M

379/63

H04M 17/00 (2006.01) H04M 1/06 (2006.01) H04M 17/02 (2006.01) H04M 19/08 (2006.01)

Patent

CA 1274329

TELEPHONE SYSTEM AND METHOD OPERATED FROM CENTRAL OFFICE LOOP CURRENT ABSTRACT OF THE INVENTION A telephone having a hook switch is coupled to tip and ring conductors for receiving loop current from a central office responsive to an off-hook condition at the hook switch. The electronic circuity within the telephone for facilitating various functions is powered entirely from the loop current flowing from the central office during the off- hook condition.

554485

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