JPS53124005A - Monitor system for subscriber line - Google Patents

Monitor system for subscriber line

Info

Publication number
JPS53124005A
JPS53124005A JP3919377A JP3919377A JPS53124005A JP S53124005 A JPS53124005 A JP S53124005A JP 3919377 A JP3919377 A JP 3919377A JP 3919377 A JP3919377 A JP 3919377A JP S53124005 A JPS53124005 A JP S53124005A
Authority
JP
Japan
Prior art keywords
subscriber line
monitor system
intra
unit
subscriber
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.)
Granted
Application number
JP3919377A
Other languages
Japanese (ja)
Other versions
JPS587091B2 (en
Inventor
Tetsumasa Ooyama
Katsuya Okimi
Yoshibumi Kato
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.)
Fujitsu Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Nippon Electric 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 Fujitsu Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP52039193A priority Critical patent/JPS587091B2/en
Publication of JPS53124005A publication Critical patent/JPS53124005A/en
Publication of JPS587091B2 publication Critical patent/JPS587091B2/en
Expired 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
    • H04M3/26—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

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Dc Digital Transmission (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To enable monitoring the fault of the transmission line between the intra-office unit and the termination unit not by the information given by the subscriber, by installing a current detector circuit to the intra-office unit.
JP52039193A 1977-04-06 1977-04-06 Subscriber line monitoring method Expired JPS587091B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52039193A JPS587091B2 (en) 1977-04-06 1977-04-06 Subscriber line monitoring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52039193A JPS587091B2 (en) 1977-04-06 1977-04-06 Subscriber line monitoring method

Publications (2)

Publication Number Publication Date
JPS53124005A true JPS53124005A (en) 1978-10-30
JPS587091B2 JPS587091B2 (en) 1983-02-08

Family

ID=12546271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52039193A Expired JPS587091B2 (en) 1977-04-06 1977-04-06 Subscriber line monitoring method

Country Status (1)

Country Link
JP (1) JPS587091B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0964973A (en) * 1995-08-28 1997-03-07 Nec Corp Lan communication equipment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62180284U (en) * 1986-04-28 1987-11-16
JPH01150798A (en) * 1987-12-08 1989-06-13 Hitachi Ltd Heat transfer pipe support structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0964973A (en) * 1995-08-28 1997-03-07 Nec Corp Lan communication equipment

Also Published As

Publication number Publication date
JPS587091B2 (en) 1983-02-08

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