JPH0318797B2 - - Google Patents

Info

Publication number
JPH0318797B2
JPH0318797B2 JP58117657A JP11765783A JPH0318797B2 JP H0318797 B2 JPH0318797 B2 JP H0318797B2 JP 58117657 A JP58117657 A JP 58117657A JP 11765783 A JP11765783 A JP 11765783A JP H0318797 B2 JPH0318797 B2 JP H0318797B2
Authority
JP
Japan
Prior art keywords
office line
circuit
photocoupler
central office
telephone
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.)
Expired - Lifetime
Application number
JP58117657A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6010896A (ja
Inventor
Hidemitsu Iwaya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP58117657A priority Critical patent/JPS6010896A/ja
Publication of JPS6010896A publication Critical patent/JPS6010896A/ja
Publication of JPH0318797B2 publication Critical patent/JPH0318797B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0096—Trunk circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
JP58117657A 1983-06-29 1983-06-29 局線回路 Granted JPS6010896A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58117657A JPS6010896A (ja) 1983-06-29 1983-06-29 局線回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58117657A JPS6010896A (ja) 1983-06-29 1983-06-29 局線回路

Publications (2)

Publication Number Publication Date
JPS6010896A JPS6010896A (ja) 1985-01-21
JPH0318797B2 true JPH0318797B2 (OSRAM) 1991-03-13

Family

ID=14717074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58117657A Granted JPS6010896A (ja) 1983-06-29 1983-06-29 局線回路

Country Status (1)

Country Link
JP (1) JPS6010896A (OSRAM)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61216562A (ja) * 1985-02-18 1986-09-26 Fujitsu Ltd 停電検出回路
JPS62278890A (ja) * 1986-05-28 1987-12-03 Meisei Electric Co Ltd 着信及び極性反転検出方式
JPS6440517U (OSRAM) * 1987-09-03 1989-03-10

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52130221A (en) * 1976-04-24 1977-11-01 Fujitsu Ltd Ringing detection circuit in telephone exchanger
JPS555944A (en) * 1978-06-29 1980-01-17 Denki Kagaku Kogyo Kk Solvent-free composition
JPS583363A (ja) * 1981-06-27 1983-01-10 Tamura Electric Works Ltd 端末機器の被呼者応答検出回路

Also Published As

Publication number Publication date
JPS6010896A (ja) 1985-01-21

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