Communication terminal apparatus having an interrupt/restart function with time measuring control for interruption and disabling feature
First Claim
1. A communication terminal apparatus connected to an integrated services digital network (ISDN) having an interrupt/restart function, comprising:
- communication means for performing data communication with a communication apparatus on another end of a line via the ISDN;
time measuring means for measuring a time period during which said communication means is initially interrupted to communicate with the communicate apparatus on the other end;
communication termination means for terminating the communication of said communication means with the communication apparatus on the other end when the time period measured by said time measuring means reaches a predetermined value;
interrupt command detection means for detecting a subsequent communication interrupt command from the ISDN while the communication between said communication means and the communication apparatus on the other end is interrupted; and
control means for controlling said time measuring means to stop its time measuring operation in order to disable said communication termination means when said interrupt command detection means detects a subsequent communication interrupt command from the ISDN.
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Accused Products
Abstract
When a no-communication state is detected for a predetermined time of time during communication in response to an interrupt designation to or from an apparatus on the other end of the line, an operation of a time monitoring timer for terminating the communication is interrupted. The time monitoring timer is restarted in response to a restart designation. Therefore, communication can be continued without interrupting an interrupt/restart service provided by, e.g., an ISDN due to a time-out error. When a trouble which disables communication occurs during communication, an interrupt service is requested to a network. When the trouble which disables communication is recovered, a restart service can be requested to the network. In this case, communication can be normally restarted without being accidentally terminated intermediately.
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Citations
8 Claims
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1. A communication terminal apparatus connected to an integrated services digital network (ISDN) having an interrupt/restart function, comprising:
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communication means for performing data communication with a communication apparatus on another end of a line via the ISDN; time measuring means for measuring a time period during which said communication means is initially interrupted to communicate with the communicate apparatus on the other end; communication termination means for terminating the communication of said communication means with the communication apparatus on the other end when the time period measured by said time measuring means reaches a predetermined value; interrupt command detection means for detecting a subsequent communication interrupt command from the ISDN while the communication between said communication means and the communication apparatus on the other end is interrupted; and control means for controlling said time measuring means to stop its time measuring operation in order to disable said communication termination means when said interrupt command detection means detects a subsequent communication interrupt command from the ISDN. - View Dependent Claims (2, 3, 4)
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5. A communication terminal apparatus connected to an integrated services digital network (ISDN) having an interrupt/restart function, comprising:
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communication means for performing data communication with a communication apparatus on another end of a line via the ISDN; time measuring means for measuring a time period during which said communication means is initially interrupted to communicate with the communication apparatus on the other end; communication termination means for terminating the communication of said communication means with the communication apparatus on the other end when the time period measured by said time measuring means reaches a predetermined value; interrupt command detection means for detecting a subsequent communication interrupt command to be sent to the ISDN during the interruption of the communication with the communication apparatus on the other end; and control means for controlling said time measuring means to stop its time measuring operation in order to disable said communication termination means when said interrupt command detection means detects a subsequent communication interrupt command to be sent to the ISDN. - View Dependent Claims (6, 7, 8)
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Specification