Telephone interface for a computer for receiving and transmitting information during the silent interval between ringing
First Claim
Patent Images
1. A telephone interface apparatus for connecting a computer external to the interface apparatus to a telephone line for use in telephone systems employing information signalling during the silent interval between rings comprising:
- line interface means for interfacing the apparatus with the telephone line,first computer interface means for interfacing the apparatus with a computer external to the interface apparatus,ring detector means for detecting a ringing signal upon the telephone line,data demodulation means connected with the line interface means and with the first computer interface means for receiving data transmitted over the telephone line during a silent interval after a ringing signal, andcontrol logic means for controlling flow of the data between the data demodulation means and the first computer interface means in response to a signal from the ring detector means whereby in operation data present on the telephone line during the silent interval is retransmitted through the first computer interface means to the computer external to the interface apparatus.
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Accused Products
Abstract
A telecommunications signalling interface for computer systems is presented. Control and information signals from the telephone switch are received, decoded, and converted to a standard interface format for retransmission to the computer. Control and information signals from the computer are received and converted to a standard format for transmission to the telephone switch. The power supply for the device is derived from the telephone network and the computer interface.
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Citations
50 Claims
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1. A telephone interface apparatus for connecting a computer external to the interface apparatus to a telephone line for use in telephone systems employing information signalling during the silent interval between rings comprising:
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line interface means for interfacing the apparatus with the telephone line, first computer interface means for interfacing the apparatus with a computer external to the interface apparatus, ring detector means for detecting a ringing signal upon the telephone line, data demodulation means connected with the line interface means and with the first computer interface means for receiving data transmitted over the telephone line during a silent interval after a ringing signal, and control logic means for controlling flow of the data between the data demodulation means and the first computer interface means in response to a signal from the ring detector means whereby in operation data present on the telephone line during the silent interval is retransmitted through the first computer interface means to the computer external to the interface apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A telephone interface apparatus for connecting a computer external to the interface apparatus to a telephone line for use in telephone systems employing information signalling during the silent interval between rings comprising:
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line interface means for interfacing the apparatus with the telephone line, first computer interface means for interfacing the apparatus with a computer external to the interface apparatus, second computer interface means in connection with the first computer interface means whereby data may be transferred through the interface apparatus by the computer external to the interface apparatus between said first and said second computer interface means, ring detector means for detecting a ringing signal upon the telephone line, data demodulation means connected with the line interface means and with the first computer interface means for receiving data transmitted over the telephone line during a silent interval after a ringing signal, and control logic means for temporarily interrupting flow of the data between the first computer interface means and the second computer interface means in response to a signal from the ring detector means whereby in operation data present on the telephone line during the silent interval is retransmitted through the first computer interface means to the computer external to the interface apparatus. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A telephone interface apparatus for connecting a computer external to the interface apparatus to a telephone line for use in telephone systems employing information signalling during the silent interval between rings comprising:
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line interface means for interfacing the apparatus with the telephone line, first computer interface means for interfacing the apparatus with a compute external to the interface apparatus, ring detector means for detecting a ringing signal upon the telephone line, data demodulation means connected with the line interface means and with the first computer interface means for sensing analog data signals transmitted over the telephone line during a silent interval after a ringing signal and converting them into digital data signals in microprocessor readable form, stored program means for storing a logic control program, and microprocessor means for controlling the flow of data between the data demodulation means and the first computer interface means in accordance with the logic control program in response to a signal from the ring detector means whereby in operation data present on the telephone line during the silent interval is retransmitted through the first computer interface means to the computer external to the interface apparatus. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 35, 36, 37, 38, 39)
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31. A telephone interface apparatus for connecting a computer external to the interface apparatus to a telephone line for use in telephone systems employing information signalling during the silent interval between rings comprising:
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line interface means for interfacing the apparatus with the telephone line, first computer interface means for interfacing the apparatus with a computer external to the interface apparatus, second computer interface means in connection with the first computer interface means whereby data may be transferred through the interface apparatus by the computer external to the interface apparatus between said first and said second computer interface means, ring detector means for detecting a ringing signal upon the telephone line, data demodulation means connected with the line interface means and with the first computer interface means for sensing analog data signals transmitted over the telephone line during a silent interval after a ringing signal and converting them into digital data signals in microprocessor readable form, stored program means for storing a logic control program, and microprocessor means for temporarily interrupting flow of the data in accordance with the logic control program between the first computer interface means and the second computer interface means in response to a signal from the ring detector means whereby in operation data present on the telephone line during the silent interval is retransmitted through the first computer interface means to the computer external to the interface apparatus. - View Dependent Claims (32, 33, 34, 40, 41, 42, 43, 44, 45, 46)
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47. A telephone interface apparatus for connecting a computer external to the interface apparatus to a telephone line for use in telephone systems employing information signalling during the silent interval between rings comprising:
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line interface means for interfacing the apparatus with the telephone line, first computer interface means for interfacing the apparatus with a computer external to the interface apparatus, data demodulation means connected with the line interface means and with the first computer interface means for receiving data transmitted over the telephone line during a silent interval after a ringing signal, and control logic means for controlling flow of the data between the data demodulation means and the first computer interface means whereby in operation data present on the telephone line during the silent interval is retransmitted through the first computer interface means to the computer external to the interface apparatus. - View Dependent Claims (48, 49, 50)
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Specification