Dial signal generator for generating dial pulse signal and dual

Details Dial signal generator for generating dial pulse signal and dual Dial signal generator for generating dial pulse signal and dual

1989-05-25

1991-03-05

Ng, Jin F.

Telephonic communications

Supervisory or control line signaling

Substation originated

379362, H04M 100

Patent

active

049982761

ABSTRACT:
A dial signal generator supplied with dial data corresponding to a dial number, includes a dial data register for storing the dial data, a decoder for decoding the dial data supplied from the dial data register to thereby generate corresponding row and column numbers based on a dual tone multi-frequency (DTMF) system, a DTMF generator for generating a DTMF signal from the row and column numbers generated by the decoder, and a dial pulse generator for generating a dial pulse signal from the dial data supplied from the dial data register.

REFERENCES:
patent: 4598174 (1986-07-01), Pommer, II
"The Ambassador Range of Telephones-Development of the Keypad and Signalling Circuitry", A. N. Child et al., Post of Electrial Engineering Jouranl, vol. 74, 1-1982, pp. 314-321.

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