KR850006284A - Multi-Frequency Dial Long Distance Call Restrictor with Electronic Simple Switching System - Google Patents

Multi-Frequency Dial Long Distance Call Restrictor with Electronic Simple Switching System Download PDF

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Publication number
KR850006284A
KR850006284A KR1019840000509A KR840000509A KR850006284A KR 850006284 A KR850006284 A KR 850006284A KR 1019840000509 A KR1019840000509 A KR 1019840000509A KR 840000509 A KR840000509 A KR 840000509A KR 850006284 A KR850006284 A KR 850006284A
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KR
South Korea
Prior art keywords
signal
complex frequency
long distance
distance call
processing unit
Prior art date
Application number
KR1019840000509A
Other languages
Korean (ko)
Inventor
이윤호
Original Assignee
이재연,하인츠 디터 케루트
금성통신 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이재연,하인츠 디터 케루트, 금성통신 주식회사 filed Critical 이재연,하인츠 디터 케루트
Priority to KR1019840000509A priority Critical patent/KR850006284A/en
Publication of KR850006284A publication Critical patent/KR850006284A/en
Priority to KR2019850014439U priority patent/KR860000112Y1/en

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Abstract

내용 없음No content

Description

전자식 간이 교환장치의 복합주파수 다이알 장거리 통화 제한장치Multi-Frequency Dial Long Distance Call Restrictor with Electronic Simple Switching System

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

첨부된 도면은 본 발명의 복합주파수 다이알 장거리 통화제한 장치의 회로도.The accompanying drawings are circuit diagrams of a multi-frequency dial long distance call restriction device of the present invention.

*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

OP1: 연산증폭기 IC5: 계전기 구동회로 IC6: 복합주파수 디코우더 IC7,IC8: 랫치회로 CPU : 중앙 연산처리장치 M1 : 메모리소자 RL1-RLn : 계전기 L1,L2: 가입자 전화기선로 L2,L4: 국선 선로OP 1 : Operational Amplifier IC 5 : Relay Drive Circuit IC 6 : Complex Frequency Decoder IC 7 , IC 8 : Latch Circuit CPU: Central Processing Unit M1: Memory Device RL 1 -RLn: Relay L 1 , L 2 : Subscriber Telephone line L 2 , L 4 : CO line

Claims (1)

복합주파수 방식 다이알을 채용하여 단축다이알 및 재다이알 기능을 수행하는 전자식 간이 교환장치에 있어서, 가입자 전화기의 복합주파수 신호가 연산증폭기(OP1)를 통하여 복합주파수 디코우더(IC6)에 인가되어 디지탈 신호로 기억됨과 동시에 랫치회로(IC7)를 통하여 중앙연산 처리장치(CPU)에 제어신호가 인가되어 복합주파수 신호를 송출하는 가입자 전화기를 선별하게 하고, 이에 따라 중앙연산 처리장치(CPU)는 랫치회로(IC8)를 통하여 복합주파수 디코우더(IC6)에 제어신호를 출력하여 기억된 디지탈신호를 중앙연산 처리장치(CPU)로 출력하게 하고, 이 디지탈 신호를 메모리 소자(M1)에 기억된 장거리통화 제한신호와 비교하여 장거리 통화 제한신호에 해당되면 계전기 구동회로(IC5)로 계전기(RL1)를 구동시켜 그위스위치(RL11),(RL12)가 접점(b),(d)에 접속되게 하므로서 가입자 전화기 선로(L1),(L2)가 국선 회로(L3),(L4)에서 개방되게 함을 특징으로 하는 전자식 간이 교환장치의 복합주파수 다이알 장거리 통화 제한장치.In an electronic simplified switching device employing a complex frequency dial to perform a speed dial and a redial function, a complex frequency signal of a subscriber telephone is applied to the complex frequency decoder (IC 6 ) through an operational amplifier (OP 1 ). The control signal is applied to the central processing unit (CPU) through the latch circuit (IC 7 ) at the same time as the digital signal, and selects the subscriber telephone that transmits the complex frequency signal. Thus, the central processing unit (CPU) The control signal is output to the complex frequency decoder IC 6 through the latch circuit IC 8 to output the stored digital signal to the central processing unit CPU, and the digital signal is output to the memory element M1. If the long distance call restriction signal is compared with the stored long distance call restriction signal, the relay drive circuit IC5 drives the relay RL1 so that the switches RL 11 and RL 12 are connected to the contacts b and d. And a subscriber telephone line (L 1 ), (L 2 ) to be opened at the trunk line circuit (L 3 ), (L 4 ). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019840000509A 1984-02-03 1984-02-03 Multi-Frequency Dial Long Distance Call Restrictor with Electronic Simple Switching System KR850006284A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019840000509A KR850006284A (en) 1984-02-03 1984-02-03 Multi-Frequency Dial Long Distance Call Restrictor with Electronic Simple Switching System
KR2019850014439U KR860000112Y1 (en) 1984-02-03 1985-10-31 Electronic switching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019840000509A KR850006284A (en) 1984-02-03 1984-02-03 Multi-Frequency Dial Long Distance Call Restrictor with Electronic Simple Switching System

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR2019850014439U Division KR860000112Y1 (en) 1984-02-03 1985-10-31 Electronic switching system

Publications (1)

Publication Number Publication Date
KR850006284A true KR850006284A (en) 1985-10-02

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ID=55315983

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019840000509A KR850006284A (en) 1984-02-03 1984-02-03 Multi-Frequency Dial Long Distance Call Restrictor with Electronic Simple Switching System

Country Status (1)

Country Link
KR (1) KR850006284A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100371192B1 (en) * 2001-04-04 2003-02-06 엘지전자 주식회사 Method to identify available phone number
KR20030012698A (en) * 2001-08-03 2003-02-12 주식회사 한국밴통신 External Telephone Call Control System.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100371192B1 (en) * 2001-04-04 2003-02-06 엘지전자 주식회사 Method to identify available phone number
KR20030012698A (en) * 2001-08-03 2003-02-12 주식회사 한국밴통신 External Telephone Call Control System.

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E902 Notification of reason for refusal
WICV Withdrawal of application forming a basis of a converted application