JPS58223949A - Automatic calling device - Google Patents

Abstract

PURPOSE:To attain surely automatic calling and connection of a desired subscriber telephone set, by comparing and checking whether or not the transmitted content is coincident with original telephone number information at each digit of a push button dial signal. CONSTITUTION:The push button dial is monitored and received at a push botton signal receiving circuit 7 of high input impedance. The result of monitoring reception is inputted to an output signal comparison circuit 8, and compared and discriminated with the original number information of the digit inputted at the same time in parallel with a conversion circuit 3 according to the time indication from an output time set circuit 5, and the result of check is set to an error flag 9. A control circuit 1 reads the content of a next digit request flag 6 and an error flag 9, and when the content is defective, the next digit is not set, the automatic calling is stopped immediately, and the mis-connection is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION In order to automatically call a desired subscriber's telephone, the present invention transmits a PB double signal (push button dial signal) of that telephone number to a telephone line, and at the same time checks whether the transmitted content is correct. This invention relates to a self-excited calling device that can check whether the

Conventional automatic calling equipment converts the telephone number information of a given subscriber's telephone into a PB signal and then sends it out to the telephone line as is, so if a failure occurs in the PB signal generation circuit, code conversion circuit, etc. , P actually sent to the telephone line
The B-times signal was digitized incorrectly, missing digits, etc., which could often lead to erroneous connections.

Systems that provide various kinds of information services using voice response devices, etc. are being actively developed and introduced. transfer notification service,
Bank account transfer notification services, etc.) require an automatic calling device, and due to the nature of the service, its PB double signal transmission must be particularly accurate to avoid erroneous connections.

In view of this point, it is an object of the present invention to provide an automatic calling device that eliminates the drawbacks of the prior art described above and can always send out a PB double signal with correct content in response to a desired telephone number.

The structure of the automatic calling device according to the present invention is that according to telephone number information given from other related devices or stems, the required code conversion is performed for each digit to generate a predetermined PB multiplied signal, and In an automatic calling device that has a function of automatically calling a subscriber's telephone by sending a call to a telephone line,
An output signal comparison circuit is added to the telephone line to compare the transmitted original telephone number information, and a comparison check is performed for each digit of the pBi= number to see whether the transmitted content matches the original telephone number information. By doing so, a control circuit is provided to immediately stop the automatic calling operation when they do not match.
) f=%9・Hereinafter, embodiments of the present invention will be described based on the drawings.

The figure is a block diagram of an embodiment of an automatic calling device according to the present invention.

Here, ■ is a control circuit that performs necessary control over each part of this device, 2 is a register that stores telephone number information for each digit, 3 is a code conversion circuit, and 4 is a PB signal generation circuit. , 5 is an output time setting circuit, 6 is a next digit request flag, 7
is a PB signal receiving circuit, 8 is an output signal comparison circuit, and 9 is an error flag.

First, the control circuit 1 receives and stores telephone number information of a desired subscriber's telephone to perform an automatic call from a related device or system.

This telephone number information is, for example, a binary code in which each digit is 4 bits, and each digit is sent from the control circuit 1 and latched into the register 2 (4 bits).
The code conversion circuit 3 converts it into a predetermined PR code (for example, one selected from each of the low group codes L1 to L4 and the high group codes H1 to H3 and combined).

The PB signal generating circuit 4 receives the above-mentioned PB code, generates a corresponding PB multiplied signal, and transmits it to the telephone line for a predetermined period of time. This predetermined time is set by the output time setting circuit 6.
carried out by

At the same time, the PB multiplied signal is monitored and received by the PB signal receiving 1g circuit 7 with high input impedance. That is, the input terminal of this PB signal receiving circuit 7 is connected to the telephone line #jlL, but for example, the input terminal is connected to the capacitor C.
After cutting off the DC current using the transformer 1 and performing impedance matching to achieve high human power impedance using the transformer 1, the corresponding P
The B-times signal is monitored and received.

The monitor reception result is input to the output signal comparison circuit 8, where the monitor reception result is inputted to the output signal comparison circuit 8, where, according to the time instruction from the output time setting circuit 5,
It is compared and judged (checked) with the original sign information of the relevant digit, which was simultaneously input in parallel to the conversion circuit 1N13, and the check result is set in the error flag 9.

Note that the output time setting circuit 5 sets the next digit request flag 6 after a predetermined time period for sending the PB signal has elapsed.

The control circuit 1 sequentially reads the contents of the next digit request flag 6 and the error flag 9, and depending on the contents of the error flag 9, if the contents are "good" (PB signal transmission of the relevant digit is normal), the telephone number is returned. Set the next digit of the information in register 2 to continue the automatic calling operation, and if it is "defective" (PB signal transmission of the relevant digit is abnormal), immediately stop the automatic calling operation without changing the next digit. to prevent incorrect connections.

As described above in detail, according to the present invention, a PB double signal with correct content is always sent in accordance with telephone number information,
Since it is possible to reliably self-call and connect the desired subscriber telephone by eliminating misconnections, etc., it not only improves the reliability of this device, but also improves the reliability and serviceability of related systems. The effect is remarkable.

[Brief explanation of drawings]

The figure is a block diagram of an embodiment of an automatic calling device according to the present invention. DESCRIPTION OF SYMBOLS 1... Control circuit, 2... Register, 3... Code conversion circuit, 4... PB signal generation circuit, Output time setting circuit, 6... Next digit request flag, 7... -PB signal receiving circuit, 8... Output signal comparison circuit, 9... Error flag.

Claims (1)

[Claims] 1. According to the telephone number information given from other related devices or systems, the required code conversion is performed for each digit to generate a predetermined PB multiplied signal, which is sent to the telephone line and sent to the subscriber's telephone. In an automatic calling device having an automatic calling function, there is a high input impedance PB signal receiving circuit that monitors and receives the FB double signal being sent to the telephone line, and an output n that compares the monitor reception result with the original call destination information. In addition to adding the above PB (8 digits), a comparison check is performed to determine whether the transmitted contents match the original telephone number information, and if they do not match, the automatic An automatic calling device characterized in that it is provided with a control circuit that controls the calling operation to be stopped.