JP2533798Y2 - 障害監視システム - Google Patents

障害監視システム

Info

Publication number
JP2533798Y2
JP2533798Y2 JP1990016139U JP1613990U JP2533798Y2 JP 2533798 Y2 JP2533798 Y2 JP 2533798Y2 JP 1990016139 U JP1990016139 U JP 1990016139U JP 1613990 U JP1613990 U JP 1613990U JP 2533798 Y2 JP2533798 Y2 JP 2533798Y2
Authority
JP
Japan
Prior art keywords
digital line
optical
signal
service data
line section
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
JP1990016139U
Other languages
English (en)
Japanese (ja)
Other versions
JPH03107845U (enrdf_load_stackoverflow
Inventor
昌広 相馬
伸幸 後藤
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP1990016139U priority Critical patent/JP2533798Y2/ja
Publication of JPH03107845U publication Critical patent/JPH03107845U/ja
Application granted granted Critical
Publication of JP2533798Y2 publication Critical patent/JP2533798Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Small-Scale Networks (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Optical Communication System (AREA)
JP1990016139U 1990-02-22 1990-02-22 障害監視システム Expired - Lifetime JP2533798Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990016139U JP2533798Y2 (ja) 1990-02-22 1990-02-22 障害監視システム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990016139U JP2533798Y2 (ja) 1990-02-22 1990-02-22 障害監視システム

Publications (2)

Publication Number Publication Date
JPH03107845U JPH03107845U (enrdf_load_stackoverflow) 1991-11-06
JP2533798Y2 true JP2533798Y2 (ja) 1997-04-23

Family

ID=31519422

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990016139U Expired - Lifetime JP2533798Y2 (ja) 1990-02-22 1990-02-22 障害監視システム

Country Status (1)

Country Link
JP (1) JP2533798Y2 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH03107845U (enrdf_load_stackoverflow) 1991-11-06

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