KR940010596A - Electronic dial signal and call tone generator circuit of key phone system - Google Patents

Electronic dial signal and call tone generator circuit of key phone system Download PDF

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Publication number
KR940010596A
KR940010596A KR1019920020023A KR920020023A KR940010596A KR 940010596 A KR940010596 A KR 940010596A KR 1019920020023 A KR1019920020023 A KR 1019920020023A KR 920020023 A KR920020023 A KR 920020023A KR 940010596 A KR940010596 A KR 940010596A
Authority
KR
South Korea
Prior art keywords
dial signal
generating
call tone
frequency
electronic dial
Prior art date
Application number
KR1019920020023A
Other languages
Korean (ko)
Inventor
황충선
Original Assignee
백중영
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 백중영, 금성통신 주식회사 filed Critical 백중영
Priority to KR1019920020023A priority Critical patent/KR940010596A/en
Publication of KR940010596A publication Critical patent/KR940010596A/en

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  • Telephonic Communication Services (AREA)

Abstract

본 발명은 다이얼신호 및 통화신호음을 발생시키는 회로에 관한 것으로, 특히 기존의 키폰전화기에 설치되어 있는 전자식 다이얼신호송출을 위한 DTMF발생기를 이용하여 다이얼신호 및 통화신호음을 함께 발생시킬 수 있도록 된 키폰시스템의 전자식 다이얼신호 및 통화신호음발생 회로에 관한 것이다.The present invention relates to a circuit for generating a dial signal and a call tone, and in particular, a keyphone system capable of generating a dial signal and a call tone together using a DTMF generator for transmitting an electronic dial signal installed in an existing key phone telephone. The present invention relates to an electronic dial signal and a call tone generating circuit.

Description

키폰시스템의 전자식 다이얼신호 및 통화신호음 발생회로Electronic dial signal and call tone generator circuit of key phone system

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 전자식 다이얼신호 및 통화신호음 발생회로이다.1 is an electronic dial signal and a call tone generating circuit according to the present invention.

Claims (2)

제1주파수를 발생시키는 제1주파수발생수단(X1)과, 제2주파수를 발생시키는 제2주파수발생수단(X2), 스위칭수단(SW1)을 통해 상기 제1 및 제2주파수발생수단에 결합되어 상기 제1 및 제2주파수를 근거로 DTMF신호와 통화신호음을 발생시키는 주파수신호발생수단(2) 및, 다이얼신호송출시와 통화신호음송출시에 상기 스위칭수단(SW1)을 스위칭 전환하는 제어수단(1)을 구비하는 것을 특징으로 하는 키폰 시스템의 전자식 다이얼신호 및 통화신호음발생회로.Coupled to the first and second frequency generating means through a first frequency generating means (X1) for generating a first frequency, a second frequency generating means (X2) for generating a second frequency, and a switching means (SW1); A frequency signal generating means (2) for generating a DTMF signal and a call tone based on the first and second frequencies; and control means for switching the switching means (SW1) at the time of dial signal transmission and call signal tone transmission ( 1) An electronic dial signal and a call tone generating circuit of a key phone system, comprising: a. 제1항에 있어서, 상기 제1 및 제2주파수발생수단(X1, X2)은 수정발진기인 것을 특징으로 하는 키폰시스템의 전자식 다이얼신호 및 통화신호음발생회로.2. An electronic dial signal and a call tone generating circuit according to claim 1, wherein said first and second frequency generating means (X1, X2) are crystal oscillators. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920020023A 1992-10-29 1992-10-29 Electronic dial signal and call tone generator circuit of key phone system KR940010596A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920020023A KR940010596A (en) 1992-10-29 1992-10-29 Electronic dial signal and call tone generator circuit of key phone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920020023A KR940010596A (en) 1992-10-29 1992-10-29 Electronic dial signal and call tone generator circuit of key phone system

Publications (1)

Publication Number Publication Date
KR940010596A true KR940010596A (en) 1994-05-26

Family

ID=67210509

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920020023A KR940010596A (en) 1992-10-29 1992-10-29 Electronic dial signal and call tone generator circuit of key phone system

Country Status (1)

Country Link
KR (1) KR940010596A (en)

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