KR950001908U - 전화선 단락 감지회로 - Google Patents

전화선 단락 감지회로

Info

Publication number
KR950001908U
KR950001908U KR2019930010358U KR930010358U KR950001908U KR 950001908 U KR950001908 U KR 950001908U KR 2019930010358 U KR2019930010358 U KR 2019930010358U KR 930010358 U KR930010358 U KR 930010358U KR 950001908 U KR950001908 U KR 950001908U
Authority
KR
South Korea
Prior art keywords
telephone line
line short
detection circuit
short circuit
circuit
Prior art date
Application number
KR2019930010358U
Other languages
English (en)
Other versions
KR950008668Y1 (ko
Inventor
김정대
Original Assignee
김정대
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 김정대 filed Critical 김정대
Priority to KR2019930010358U priority Critical patent/KR950008668Y1/ko
Publication of KR950001908U publication Critical patent/KR950001908U/ko
Application granted granted Critical
Publication of KR950008668Y1 publication Critical patent/KR950008668Y1/ko

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Alarm Systems (AREA)
KR2019930010358U 1993-06-11 1993-06-11 전화선 단락 감지회로 KR950008668Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019930010358U KR950008668Y1 (ko) 1993-06-11 1993-06-11 전화선 단락 감지회로

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019930010358U KR950008668Y1 (ko) 1993-06-11 1993-06-11 전화선 단락 감지회로

Publications (2)

Publication Number Publication Date
KR950001908U true KR950001908U (ko) 1995-01-04
KR950008668Y1 KR950008668Y1 (ko) 1995-10-12

Family

ID=19357035

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019930010358U KR950008668Y1 (ko) 1993-06-11 1993-06-11 전화선 단락 감지회로

Country Status (1)

Country Link
KR (1) KR950008668Y1 (ko)

Also Published As

Publication number Publication date
KR950008668Y1 (ko) 1995-10-12

Similar Documents

Publication Publication Date Title
DE69428068T2 (de) Teilnehmerschnittstellenschaltung
DE69404726T2 (de) Schnittstellenschaltung
DE69427339D1 (de) Begrenzungsschaltung
DE69410836T2 (de) Schaltkreis
DE9309032U1 (de) Telefonvorrichtung
DE69708167T2 (de) Erfassungsschaltung
KR950007574U (ko) 사운드 캐리어 검파회로
DE69413154T2 (de) Detektionsschaltung
FR2720577B1 (fr) Circuit de détection de tonalité téléphonique.
DE69618122D1 (de) Übergangsdetektionsschaltung
KR950001908U (ko) 전화선 단락 감지회로
DE9320041U1 (de) Alarmtelefon
KR950028229U (ko) 전화선로 단락 검지 회로
KR940023213U (ko) 전화선 단락감지회로
KR930022508U (ko) 전화착신 검출회로
KR930022509U (ko) 전화기 사용상태 검출회로
DE69313257T2 (de) Schaltung
DE9309825U1 (de) Schaltungsanordnung
KR950021904U (ko) 전화기 보호회로
KR940008301U (ko) 모터의 단선감지회로
KR950028888U (ko) 전화선로 링 신호 검출회로
KR920015956U (ko) 전화기의 송수화 회로
KR910016019U (ko) 전화 선로상의 신호음 검출회로
KR940021282U (ko) 브이씨알/전화기 일체형 회로
KR950015800U (ko) 과전류 검출회로

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
NORF Unpaid initial registration fee