JPS5945752A - Line state monitor circuit - Google Patents

Abstract

PURPOSE:To allow an electronic computer to detect instantly a line disconnection and a busy state of an opposite terminal, by detecting a call tone or a busy tone generated when the line under connection is interrupted in an on-line system via the telephone line. CONSTITUTION:A telephone terminal device 1 and the electronic computer 4 are connected via a telephone network 2 and a voice response device 100, and when the device 100 receives an incoming signal from a terminal 1 via the telephone network 2, a telephone subscriber circuit 3 reports it to the computer 4 and the channel is connected with the command of the computer 4. When the line is disconnected, a call tone outputted from the telephone network 2 is received at a frequency receiver 5, the tone is compared with a simulated dial tone generated from a tone forming circuit at a comparison circuit 7, and the computer 4 detects the disconnection of line by setting a flag from a flag generator 8. The detection of a busy tone is detected similarly in comparison with the simulated tone from the tone generating circuit 6 and the setting of a flag.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a line status monitoring circuit, and more particularly, to a line status monitoring circuit that can instantly detect the connection status of a line in an online system using a telephone network. .

[Prior art]

In recent years, online systems using telephone lines have been put into practical use, and since telephone lines may be disconnected due to various connections, - in online systems, the computer monitors the connection status. There is a need.

For example, in an online system where subscribers access a central computer via a telephone network using push-button telephone terminals, a voice response device that provides voice responses to subscribers monitors the line connection status. . In this conventional voice response device, when the line is disconnected from the telephone network due to an incoming call from a subscriber, the line is disconnected due to the unresponsive time from the subscriber. I worked it out.

This non-response time is calculated based on the subscriber's intelligence and thinking time.
Because of the inability to keep up with the clock, the conventional Yahoo! and Yahoo! trading systems took a long time to detect line disconnections, which led to a reduction in the processing capacity of the network, leading to problems. Also, conversely, 'electronic meter'p
1. Even when the wall makes an automatic call to the subscriber, the line connection status is monitored by reducing the unresponsive time due to the subscriber talking, etc., so conventional voice response devices require a total of nine devices. It also had the problem of reducing the processing power of

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the problems of the prior art, and to provide a line connection status monitoring circuit that can detect the line connection status of a telephone network in a short period of time.

[Summary of the invention]

In order to achieve the above object, the line status monitoring circuit according to the present invention monitors the line connection status by detecting a dial tone generated when a connected line is disconnected or a busy tone generated during a call. It is characterized by For this purpose, the circuit according to the invention comprises means for detecting dial tones and busy tones, and comparison means for comparing pseudo dial tones, and when the comparison means detects a match of dial tones during line connection. If the comparison circuit detects a match between busy tones when a call is made, it reports to the higher-level device that the other party is busy. .

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

This embodiment is an example in which a line connection status monitoring circuit according to the present invention is provided in a voice response device.

The figure is a diagram of an online system that connects a telephone terminal and an electronic phone number via a telephone network and a voice response device. In the figure, 1 is the subscriber's telephone terminal, 2 is the telephone network,
100 is a voice response device, 4 is an electronic computer, and this voice response device k 100 is connected to a telephone subscriber circuit, for example, an incoming trunk 3, which is connected to the telephone terminal 1 via the telephone network 2, and which is connected to the telephone network 2. a frequency receiver 5 for detecting dial tones and busy tones;
a comparison circuit 7 for comparing the tone detected by the pseudo tone generating circuit 6 with the pseudo tone generated by the pseudo tone forming circuit 6;
It is comprised of a flag generator 8 which sets a flag and reports it to the computer 4 when tone matching is detected by the circuit 7, and an automatic calling circuit 9.

It should be noted that the functional unit that performs the original voice response of the voice response device is not directly related to the present invention and will therefore be omitted.

When this voice response device receives a call signal from the telephone terminal 1 by controlling the telephone network 2, the telephone subscriber circuit 3 reports this to the electronic computer 4, and the computer 40 uses the finger button to change the channel A. Connecting.

If the line is disconnected here, the frequency receiver 5 receives the dial tone output from the telephone network 2, and the comparison circuit 7 detects the dial tone generated by the tone forming circuit 6. It is determined that there is a match with the dial tone, and by setting a lag in the flag generator 8 or 7, the '1 child calculator 4 instantly detects that the line has been disconnected.

In addition, when the voice response device 100 makes a call to the telephone terminal 1 via the telephone network 2 using the automatic calling circuit 9, a busy tone generated by the telephone network 2 while the telephone terminal 1 is in use. The frequency receiver 5 receives this busy tone and the pseudo busy tone generated by the tone generating circuit 6, and the comparison circuit 7 compares it to see if they match.The flag generator 8 sets a flag, and the electronic computer 4 ,
It is instantly detected that the corresponding telephone terminal 1 is in use.

[Effect of the invention] As described above, in this embodiment, the voice response device detects dial tones and busy tones generated by the telephone network, so that the electronic telephone system can instantly prevent line disconnection and interference. + Can detect when the terminal is busy.

In the above embodiment, the voice response device is provided with a line status detector T1, but the present invention is not limited to this. This can also be implemented by providing a main detection device on the computer side channel or modem in the online system.

[Brief explanation of the drawing]

The figure shows an online system in which a voice response device is provided with a line connection state monitoring circuit according to the present invention. 1...Telephone terminal, 2...Telephone network, 3...Kimono trunk, 4...Electronic computer, 5...Frequency receiver,
6... Tone forming circuit, 7... Comparison circuit, 8...
Flag generation circuit, 9... automatic calling circuit. Agent Patent Attorney Masami Akimoto

Claims (1)

[Claims] A line status monitoring circuit for an online system that connects a telephone terminal and a slave computer via a telephone network, the circuit comprising: II
A detection means for detecting a dial tone and a busy tone generated from the TU network, a pseudo tone generation means for generating a pseudo dial tone and a busy tone, and a comparison between the tone detected by the detection means and the tone generated by the pseudo tone generation means. the comparison means compares the tones after the line is connected, and if the dial tones match, it reports to the computer that a line disconnection event has occurred; The means compares the busy tones and if the busy tones match, it reports to the computer that the telephone terminal is in use.95. line status monitoring circuit.