Single line communication apparatus for speech and data and method therefor
First Claim
1. A data communication apparatus, in which a remote telephone can be connected and a single communication line is selectively used for speech communication by the telephone and data communication by a data communication means, comprising:
- detection mean for detecting a remote indication for starting data communication from the telephone remote from the data communication means;
switch-over means for switching over the communication line from the telephone to the data communication means in response to the remote indication;
control means for detecting reception of a signal related to data communication after the communication line has been switched over to the data communication means by the switch-over means, and for controlling a start of data communication in response to the signal reception detection; and
information means for informing an operator at the telephone by a sound that data communication has been started by said control means.
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Accused Products
Abstract
In a single line communication apparatus for both telephone and data (e.g., facsimile), the communication line is switched from a telephone to a data communication unit when an incoming data call is received in response to an indication for data communication from the telephone. The communication line is monitored to detect the occurrence of a non-aural terminal calling tone (CNG) within a predetermined time period. Upon detection of the CNG tone within the predetermined time period, a non-aural called party discrimination signal (CED) is transmitted to indicate the start of a data communication.
72 Citations
14 Claims
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1. A data communication apparatus, in which a remote telephone can be connected and a single communication line is selectively used for speech communication by the telephone and data communication by a data communication means, comprising:
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detection mean for detecting a remote indication for starting data communication from the telephone remote from the data communication means; switch-over means for switching over the communication line from the telephone to the data communication means in response to the remote indication; control means for detecting reception of a signal related to data communication after the communication line has been switched over to the data communication means by the switch-over means, and for controlling a start of data communication in response to the signal reception detection; and information means for informing an operator at the telephone by a sound that data communication has been started by said control means. - View Dependent Claims (2, 3, 4, 5)
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6. A data communication method for use in a system in which a single communication line is selectively used for speech communication by a remote telephone and data communication by a data communication means, and the data communication is initiated during speech communication by the telephone, comprising the steps of:
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transmitting a remote indication for starting data communication from the telephone to the data communication means, the telephone being remote from the data communication means; switching over the communication line from the speech communication by the telephone to the data communication by the data communication means in response to the remote indication for data communication; detecting reception of a signal related to data communication from the communication line; controlling a start of data communication in response to the signal detection; and informing an operator at the telephone by a sound that data communication has been started. - View Dependent Claims (7, 8, 9, 10)
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11. A data communication apparatus in which a remote telephone is connected, comprising:
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data communication means for data communication, the telephone being remote from said data communication means; switching means for selectively connecting the telephone or said data communication means with a communication line; detection means for detecting a remote indication for starting data communication from the telephone; control means for switching over said switching means from the telephoned to the data communication means in response to the indication, detecting a signal related to data communication from the line, and controlling the start of data communication in response to the detected signal; and information means for informing an operator at the telephone by a sound that the data communication has been started by said control means. - View Dependent Claims (12, 13, 14)
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Specification