JPH0459665U - - Google Patents

Info

Publication number
JPH0459665U
JPH0459665U JP10356690U JP10356690U JPH0459665U JP H0459665 U JPH0459665 U JP H0459665U JP 10356690 U JP10356690 U JP 10356690U JP 10356690 U JP10356690 U JP 10356690U JP H0459665 U JPH0459665 U JP H0459665U
Authority
JP
Japan
Prior art keywords
current
loop
closed loop
monitoring means
communication
Prior art date
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.)
Pending
Application number
JP10356690U
Other languages
English (en)
Japanese (ja)
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 JP10356690U priority Critical patent/JPH0459665U/ja
Publication of JPH0459665U publication Critical patent/JPH0459665U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
JP10356690U 1990-10-01 1990-10-01 Pending JPH0459665U (OSRAM)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10356690U JPH0459665U (OSRAM) 1990-10-01 1990-10-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10356690U JPH0459665U (OSRAM) 1990-10-01 1990-10-01

Publications (1)

Publication Number Publication Date
JPH0459665U true JPH0459665U (OSRAM) 1992-05-21

Family

ID=31848496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10356690U Pending JPH0459665U (OSRAM) 1990-10-01 1990-10-01

Country Status (1)

Country Link
JP (1) JPH0459665U (OSRAM)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56117492A (en) * 1980-02-22 1981-09-14 Hitachi Ltd Answer monitor circuit
JPS62110390A (ja) * 1985-11-08 1987-05-21 Nec Corp 電話交換装置の局線回路の直流終端回路
JPS62241493A (ja) * 1986-03-19 1987-10-22 Iwatsu Electric Co Ltd ル−プ検出回路

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56117492A (en) * 1980-02-22 1981-09-14 Hitachi Ltd Answer monitor circuit
JPS62110390A (ja) * 1985-11-08 1987-05-21 Nec Corp 電話交換装置の局線回路の直流終端回路
JPS62241493A (ja) * 1986-03-19 1987-10-22 Iwatsu Electric Co Ltd ル−プ検出回路

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