JPS5439685B2 - - Google Patents

Info

Publication number
JPS5439685B2
JPS5439685B2 JP13045375A JP13045375A JPS5439685B2 JP S5439685 B2 JPS5439685 B2 JP S5439685B2 JP 13045375 A JP13045375 A JP 13045375A JP 13045375 A JP13045375 A JP 13045375A JP S5439685 B2 JPS5439685 B2 JP S5439685B2
Authority
JP
Japan
Legal status (The legal status 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 status listed.)
Expired
Application number
JP13045375A
Other languages
Japanese (ja)
Other versions
JPS5255306A (en
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 filed Critical
Priority to JP13045375A priority Critical patent/JPS5255306A/en
Publication of JPS5255306A publication Critical patent/JPS5255306A/en
Publication of JPS5439685B2 publication Critical patent/JPS5439685B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
JP13045375A 1975-10-31 1975-10-31 Dc loop monitor detection circuit Granted JPS5255306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13045375A JPS5255306A (en) 1975-10-31 1975-10-31 Dc loop monitor detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13045375A JPS5255306A (en) 1975-10-31 1975-10-31 Dc loop monitor detection circuit

Publications (2)

Publication Number Publication Date
JPS5255306A JPS5255306A (en) 1977-05-06
JPS5439685B2 true JPS5439685B2 (en) 1979-11-29

Family

ID=15034585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13045375A Granted JPS5255306A (en) 1975-10-31 1975-10-31 Dc loop monitor detection circuit

Country Status (1)

Country Link
JP (1) JPS5255306A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0319640Y2 (en) * 1984-01-19 1991-04-25

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS533109A (en) * 1976-06-30 1978-01-12 Oki Electric Ind Co Ltd Subscriber line scanning system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0319640Y2 (en) * 1984-01-19 1991-04-25

Also Published As

Publication number Publication date
JPS5255306A (en) 1977-05-06

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