Universal telephone ringing generator

Details Universal telephone ringing generator Universal telephone ringing generator

H - Electricity

04

M

328/107, 379/16,

H04M 3/02 (2006.01) H04M 5/12 (2006.01) H04M 19/02 (2006.01) H04Q 1/30 (2006.01)

Patent

CA 1191212

UNIVERSAL TELEPHONE RINGING GENERATOR Abstract of the Disclosure A high level signal generator provides a wide range of ringing signals in response to a periodic clock signal and as addressed by d plurality of manually setable binary words. The binary words are gated one after the other from a corresponding plurality of binary word sources in response to a control signal. An analog signal source generates an analog signal with a frequency as selected by an instant gated binary word. A control signal generator generates the control signal having a plurality of states, each corresponding to d one of a corresponding plurality of cadence phases. Each of the cadence phases is of a duration consistent with an occurrence of a plurality of the clock signals as defined by the gated binary word. -i-

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