Ring discriminator

Details Ring discriminator Ring discriminator

H - Electricity

04

M

H04M 3/02 (2006.01) H04Q 1/442 (2006.01) H04M 19/04 (2006.01)

Patent

CA 2164247

A ring discriminator comprised of apparatus for receiving an input ringing signal, a counter, apparatus for applying clock pulses to the counter, apparatus for enabling the counter to count clock pulses from a cycle of ringing current, and apparatus for determining a clock pulse count on the counter to distinguish a frequency characteristic of the ringing signal.

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