Telephonic communications – Supervisory or control line signaling – Substation originated
Patent
1997-04-03
1999-10-05
Le, N.
Telephonic communications
Supervisory or control line signaling
Substation originated
379354, 379216, H04M 100
Patent
active
059636378
ABSTRACT:
A dedicated telephone dialer capable, in one embodiment, of automatically dialing a preprogrammed calling card abbreviated telephone number at one speed, waiting for a short period and then dialing a preprogrammed access number and, optionally, a preprogrammed personal identification number (PIN) at a slower speed. In second and third embodiments the dedicated telephone dialer is capable of automatically dialing a preprogrammed calling card abbreviated telephone number at one speed upon first activation and, dialing a preprogrammed access number and, optionally, a preprogrammed PIN at a slower speed, upon second activation. This invention comprises electrical circuitry for generating DTMF tones, logic for dialing the requisite numbers, and a switch, or switches in the case of the third embodiment, for initiating the dialing sequence or sequences. The electrical circuitry includes a replaceable power source, a number generating device, and a tone generating device. The dialing logic is contained in a microprocessor. The circuitry and logic device are all contained within a case which includes a grille to allow penetration of the DTMF tones. The switch is mounted on the exterior of the case. To use this invention it is held up to the transmitter of an off-hook telephone handset, the first digit of the access number is dialed from the telephone keypad then the switch or switches on this invention are activated.
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Le N.
Townsley Norton R.
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