KR940017545A - D.D.D control method and apparatus of digital simple exchange system - Google Patents
D.D.D control method and apparatus of digital simple exchange system Download PDFInfo
- Publication number
- KR940017545A KR940017545A KR1019920025084A KR920025084A KR940017545A KR 940017545 A KR940017545 A KR 940017545A KR 1019920025084 A KR1019920025084 A KR 1019920025084A KR 920025084 A KR920025084 A KR 920025084A KR 940017545 A KR940017545 A KR 940017545A
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- South Korea
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- dtmf
- signal
- trunk line
- control means
- transmitted
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- Interface Circuits In Exchanges (AREA)
Abstract
본 발명은 DTMF감지장치를 이용하여 D.D.D사용을 제어하는 간이 교환시스템의 D.D.D제어방법 및 장치에 관한 것으로, 전화장치로부터의 통화신호를 감쇄수단을 통해 DTMF감지부에 인가하는 것을 특징으로 한다. 따라서, 본 발명에 의한 이용자의 음성에 포함되어 있는 DTMF성분이 감쇄수단에 의해 제기되어 음성에 포함된 DTMF성분에 의해 D.D.D제어동작이 발생하는 것이 방지되게 된다.The present invention relates to a D.D.D control method and apparatus of a simple exchange system for controlling the use of D.D.D by using a DTMF detection device, characterized in that the call signal from the telephone apparatus is applied to the DTMF detection unit through attenuating means. Therefore, the DTMF component contained in the user's voice according to the present invention is brought up by the attenuation means to prevent the D.D.D control operation from being generated by the DTMF component included in the voice.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 본 발명의 일실시예에 따른 D.D.D제어방법을 설명하기 위한 플로우차트, 제3도는 본 발명에 따른 D.D.D제어방법을 아날로그간이교환시스템에 적용한 경우의 회로구성을 나타낸 블록구성도, 제4도는 본 발명에 따른 D.D.D제어 방법을 디지탈간이교환시스템에 적용한 경우의 회로구성을 나타낸 블록구성도이다.2 is a flowchart illustrating a DDD control method according to an embodiment of the present invention, and FIG. 3 is a block diagram showing a circuit configuration when the DDD control method according to the present invention is applied to an analog simplified switching system. Fig. 1 is a block diagram showing the circuit configuration when the DDD control method according to the present invention is applied to a digital simplified switching system.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920025084A KR940017545A (en) | 1992-12-22 | 1992-12-22 | D.D.D control method and apparatus of digital simple exchange system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1019920025084A KR940017545A (en) | 1992-12-22 | 1992-12-22 | D.D.D control method and apparatus of digital simple exchange system |
Publications (1)
Publication Number | Publication Date |
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KR940017545A true KR940017545A (en) | 1994-07-26 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019920025084A KR940017545A (en) | 1992-12-22 | 1992-12-22 | D.D.D control method and apparatus of digital simple exchange system |
Country Status (1)
Country | Link |
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KR (1) | KR940017545A (en) |
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1992
- 1992-12-22 KR KR1019920025084A patent/KR940017545A/en not_active Application Discontinuation
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