KR980007375A

KR980007375A - Public telephone verification system and control method

Info

Publication number: KR980007375A
Application number: KR1019970071578A
Authority: KR
Inventors: 권황섭
Original assignee: 권황섭
Priority date: 1997-09-04
Filing date: 1997-12-22
Publication date: 1998-03-30
Also published as: KR100258639B1

Abstract

본 발명은, 통화요금을 지불한 후 정상적인 방법으로 공중전화를 이용해야 함에도 불구하고, 공중전화 선로에 일반 전화기를 연결하여도 통과가 가능하다는 점을 악용, 공중전화 선로를 도용함으로써 부정통화를 시도하려는 것을 미연에 방지하는 공중전화기 검증시스템 및 그 제어방법에 관한 것이다.The present invention attempts to make a fraudulent call by stealing a public telephone line, exploiting the fact that a public telephone can be connected to a public telephone line even though a public telephone must be used in a normal manner after paying a call charge. The present invention relates to a public telephone verification system and a method of controlling the same.

이를 위한 본 발명은, 통화중에 비가청 대역의 주파수를 이용, 특정한 정보를 공중전화기측으로 전송한 후, 그 공중전화기측으로부터 응답된 정보를 수신하여 분석한 결과, 검증될 수 없는 정보일 때는 전화선로를 강제로 절단하여 부정통화시도를 제한하는 선로감시 제어장치와, 상기 선로감시 제어장치로부터 수신된 정보를 분석한 후 검증될 수 있는 인증값을 생성하여 상기 선로감시 제어장치로 전송하는 공중전화기와, 상기 선로감시 제어장치와 공중전화기간에 통신로를 구성하는 전화선로와, 전화국의 교환기(미도시)와 상기 공중전화기와 통신로를 형성하기 위하여, 전화국 외부에서 인입된 전화선로가 선로감시 제어장치를 경유하여 수용될 수 있도록 구성된 주배선반을 포함하여 구성함으로서 종래와 같이 공중전화선로를 도용한 부정통화를 방지함과 아울러, 공중전화 사업자에게는 보안 체계가 구비되어 있는 공중전화기를 제공하게 되는 것이다.To this end, the present invention transmits specific information to a public telephone by using a frequency of an inaudible band during a call, and then receives and analyzes information received from the public telephone. A line surveillance control device for restricting false call attempts by forcibly cutting the signal, and a public telephone for generating an authentication value that can be verified after analyzing the information received from the line surveillance control device, and transmitting it to the line surveillance control device. And a telephone line configured outside the telephone station to form a telephone line constituting a communication path during the public telephone period with the line monitoring control device and a telephone exchanger (not shown) and a telephone line outside the telephone station. Fraudulent calls stealing public telephone lines as in the prior art by including a main distribution board configured to be accepted via the device Prevention also and at the same time, public phone operators who would be available to the public telephone that is equipped with a security system.

Description

Public telephone verification system and control method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims

When using a frequency of an inaudible band during a call to generate specific information and transmit it to the public telephone 100, after receiving and analyzing the information received from the public telephone 100, when the information cannot be verified The line monitoring control device 300 forcibly cutting a telephone line to limit an illegal call attempt, and generates an authentication value that can be verified after analyzing the information received from the line monitoring control device 300. A public telephone 100 to be transmitted to the control device 300, a telephone line 200 constituting a communication path between the line monitoring control device 300 and the public telephone 100, a telephone exchanger (not shown), In order to form a communication path with the public telephone 100, the telephone line 200 introduced from the outside of the telephone station includes a main wiring board 400 configured to be accommodated via the line monitoring control device 300 By air Firearms verification system.

According to claim 1, The public telephone 100 outputs guide information through the display device, dial number input, amplifies the handset to make a call available state and processing various functions of the public telephone, such as processing information of coins and card amount By analyzing the information input from the telephone control circuit 110 and the line monitoring control device 300 to control and generates an authentication value that can be verified and can be verified by transmitting to the line monitoring control device 300 side Line interface 120 for connecting the telephone line 200 to transmit and receive the code analysis controller 130, the telephone control circuit 110 and various signals of the code analysis controller 130 and the telephone station to confirm that the public telephone Public telephone verification system comprising a).

According to claim 1, wherein the line monitoring control device 300 detects a line for detecting a line loop (loop) signal and a billing signal during a call when the public telephone (100) is off-hook (off-hook) to start a call The unit 310 receives specific information generated from the line control unit 340 during a call and modulates it to a frequency of an inaudible band to the public telephone 100 through the line detecting unit 310 and the telephone line 200. A line for transmitting and disabling the telephone line by cutting the telephone line by the frequency control demodulation unit 320 and the line control signal of the line control unit 340 to restore the frequency received from the public telephone 100 to the digital data. And a control relay 330, a signal cycle setting unit 350 for arbitrarily designating a signal cycle to be transmitted to the public telephone 100, and a line controller 340 for controlling and processing all functions of the present circuit. Featured ball Phone verification system.

The system of claim 2, wherein the code analysis controller is modular and can be applied to any telephone.

The apparatus of claim 1, wherein the line monitoring control device 300 verifies the public telephone 100 when the telephone line 200 is looped, when a billing signal is generated during a call, and at a randomly designated time period. The control method of the public telephone verification system comprising a.

When an off-hook and a charging signal are detected, a command and a common random number 1 are generated and transmitted to the telephone side, and after receiving the identification signal (ID), which is a response signal from the charging side, the security key After generating the value and sending the command and the random number 2 back to the telephone side, receiving the authentication value of the telephone side, comparing the authentication value generated by the line monitoring controller, if the same value, the call is continued. Control method of a public telephone verification system, characterized in that it comprises a.

7. The method of claim 6, wherein after the command and the command random number 1 are generated and transmitted to the telephone side, the line is forcibly disconnected if identification (ID), which is a response signal of the telephone side, is not received for a predetermined time. Control method of a public telephone verification system, characterized in that the step.

7. The method of claim 6, further comprising the step of forcibly cutting the line if the authentication value is not received from the telephone side for a predetermined time after generating the security key value and transmitting the command and the random number 2 back to the telephone side. Control method of public telephone verification system.

7. The public telephone verification system according to claim 6, wherein after receiving the authentication value of the telephone side, the step of forcibly cutting the line if it is not the same value in the process of comparing the authentication value generated by the line monitoring control device. Control method.