JPH0234504B2 - - Google Patents

Info

Publication number
JPH0234504B2
JPH0234504B2 JP57169548A JP16954882A JPH0234504B2 JP H0234504 B2 JPH0234504 B2 JP H0234504B2 JP 57169548 A JP57169548 A JP 57169548A JP 16954882 A JP16954882 A JP 16954882A JP H0234504 B2 JPH0234504 B2 JP H0234504B2
Authority
JP
Japan
Prior art keywords
clear signal
alarm
maintenance
digital transmission
centralized maintenance
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
JP57169548A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5961258A (ja
Inventor
Hisao Kono
Naoki Aihara
Takashi Yokoto
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 JP16954882A priority Critical patent/JPS5961258A/ja
Publication of JPS5961258A publication Critical patent/JPS5961258A/ja
Publication of JPH0234504B2 publication Critical patent/JPH0234504B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/20—Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles
    • H04Q1/22—Automatic arrangements
    • H04Q1/26—Automatic arrangements for signalling trouble in unoccupied sub-exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
JP16954882A 1982-09-30 1982-09-30 集中保守方式 Granted JPS5961258A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16954882A JPS5961258A (ja) 1982-09-30 1982-09-30 集中保守方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16954882A JPS5961258A (ja) 1982-09-30 1982-09-30 集中保守方式

Publications (2)

Publication Number Publication Date
JPS5961258A JPS5961258A (ja) 1984-04-07
JPH0234504B2 true JPH0234504B2 (enrdf_load_stackoverflow) 1990-08-03

Family

ID=15888511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16954882A Granted JPS5961258A (ja) 1982-09-30 1982-09-30 集中保守方式

Country Status (1)

Country Link
JP (1) JPS5961258A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2451043B (en) * 2006-04-10 2011-03-09 Guibao Xue Double layer cable-strut roof system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54126406A (en) * 1978-03-24 1979-10-01 Nec Corp Trouble monitor system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2451043B (en) * 2006-04-10 2011-03-09 Guibao Xue Double layer cable-strut roof system

Also Published As

Publication number Publication date
JPS5961258A (ja) 1984-04-07

Similar Documents

Publication Publication Date Title
GB9313526D0 (en) Method and apparatus for alarm surveillance for an optical transmission system
US4777330A (en) Network system diagnosis system
US5297134A (en) Loop mode transmission system with bus mode backup
JPH0376620B2 (enrdf_load_stackoverflow)
JPH0234504B2 (enrdf_load_stackoverflow)
JP3883285B2 (ja) トンネル防災システム
JPH071870Y2 (ja) 光中継器の警報指示信号送出回路
JPS5821251Y2 (ja) 二重化方式デ−タ伝送装置
JPS59114929A (ja) 伝送路障害検出方式
JPS61195495A (ja) 分散処理型自火報システム
JPH0326940B2 (enrdf_load_stackoverflow)
JPS62272639A (ja) Ｐｃｍ中継装置の集中監視方式
JP2793398B2 (ja) 環状回線の監視方法
JPS61195494A (ja) 分散処理型自火報システム
JPH0551240B2 (enrdf_load_stackoverflow)
JPS61156928A (ja) 通信回線の自動切替方式
JPH0228941B2 (enrdf_load_stackoverflow)
JPS61258548A (ja) 障害検出方式
JPS61156350A (ja) 共通バス障害診断・救済方式
JP2002044113A (ja) ハブ装置
JPS5881357A (ja) 通信制御装置の予備切替方式
JPS60130945A (ja) 無線中継装置の状態監視方式
JPS593052B2 (ja) デ−タデンソウソウチ
JPH01161999A (ja) 遠隔監視制御装置
JPS59127160A (ja) 障害検出方式