KR890005806U - CO Line Detection Circuit - Google Patents

CO Line Detection Circuit

Info

Publication number
KR890005806U
KR890005806U KR2019870013817U KR870013817U KR890005806U KR 890005806 U KR890005806 U KR 890005806U KR 2019870013817 U KR2019870013817 U KR 2019870013817U KR 870013817 U KR870013817 U KR 870013817U KR 890005806 U KR890005806 U KR 890005806U
Authority
KR
South Korea
Prior art keywords
detection circuit
line detection
line
circuit
detection
Prior art date
Application number
KR2019870013817U
Other languages
Korean (ko)
Other versions
KR900004646Y1 (en
Inventor
신현정
Original Assignee
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 금성통신 주식회사 filed Critical 금성통신 주식회사
Priority to KR2019870013817U priority Critical patent/KR900004646Y1/en
Publication of KR890005806U publication Critical patent/KR890005806U/en
Application granted granted Critical
Publication of KR900004646Y1 publication Critical patent/KR900004646Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/82—Line monitoring circuits for call progress or status discrimination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/71—Substation extension arrangements
    • H04M1/715—Substation extension arrangements using two or more extensions per line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/02—Diodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/04—Transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
KR2019870013817U 1987-08-19 1987-08-19 Loop current sensing circuit KR900004646Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019870013817U KR900004646Y1 (en) 1987-08-19 1987-08-19 Loop current sensing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019870013817U KR900004646Y1 (en) 1987-08-19 1987-08-19 Loop current sensing circuit

Publications (2)

Publication Number Publication Date
KR890005806U true KR890005806U (en) 1989-04-21
KR900004646Y1 KR900004646Y1 (en) 1990-05-25

Family

ID=19266629

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019870013817U KR900004646Y1 (en) 1987-08-19 1987-08-19 Loop current sensing circuit

Country Status (1)

Country Link
KR (1) KR900004646Y1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101617130B1 (en) * 2015-11-17 2016-04-29 노공환 Voltage detector of distributing board

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101617130B1 (en) * 2015-11-17 2016-04-29 노공환 Voltage detector of distributing board

Also Published As

Publication number Publication date
KR900004646Y1 (en) 1990-05-25

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Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19930203

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee