JPS51136204A - Light pcm group transmission relay monitoring - Google Patents

Light pcm group transmission relay monitoring

Info

Publication number
JPS51136204A
JPS51136204A JP50061183A JP6118375A JPS51136204A JP S51136204 A JPS51136204 A JP S51136204A JP 50061183 A JP50061183 A JP 50061183A JP 6118375 A JP6118375 A JP 6118375A JP S51136204 A JPS51136204 A JP S51136204A
Authority
JP
Japan
Prior art keywords
light
group transmission
transmission relay
relay monitoring
pcm group
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
JP50061183A
Other languages
Japanese (ja)
Inventor
Osahiro Mochida
Tadao Ogawa
Kazuo Yamaguchi
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
Original Assignee
Fujitsu 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 filed Critical Fujitsu Ltd
Priority to JP50061183A priority Critical patent/JPS51136204A/en
Publication of JPS51136204A publication Critical patent/JPS51136204A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:Defective point recognition at end station.
JP50061183A 1975-05-21 1975-05-21 Light pcm group transmission relay monitoring Pending JPS51136204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50061183A JPS51136204A (en) 1975-05-21 1975-05-21 Light pcm group transmission relay monitoring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50061183A JPS51136204A (en) 1975-05-21 1975-05-21 Light pcm group transmission relay monitoring

Publications (1)

Publication Number Publication Date
JPS51136204A true JPS51136204A (en) 1976-11-25

Family

ID=13163783

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50061183A Pending JPS51136204A (en) 1975-05-21 1975-05-21 Light pcm group transmission relay monitoring

Country Status (1)

Country Link
JP (1) JPS51136204A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53100701A (en) * 1977-02-15 1978-09-02 Fujitsu Ltd Transmission relay monitor system for optical pcm group
JPS59167161A (en) * 1983-03-11 1984-09-20 Hitachi Ltd Trouble position searching system of digital transmission line
US6081557A (en) * 1996-05-16 2000-06-27 Nec Corporation Datalink system and communication network

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4870446A (en) * 1971-12-23 1973-09-25
JPS49103508A (en) * 1973-02-05 1974-10-01

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4870446A (en) * 1971-12-23 1973-09-25
JPS49103508A (en) * 1973-02-05 1974-10-01

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53100701A (en) * 1977-02-15 1978-09-02 Fujitsu Ltd Transmission relay monitor system for optical pcm group
JPS59167161A (en) * 1983-03-11 1984-09-20 Hitachi Ltd Trouble position searching system of digital transmission line
US6081557A (en) * 1996-05-16 2000-06-27 Nec Corporation Datalink system and communication network

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