JPS52151505A - Alarm sending system - Google Patents

Alarm sending system

Info

Publication number
JPS52151505A
JPS52151505A JP6771976A JP6771976A JPS52151505A JP S52151505 A JPS52151505 A JP S52151505A JP 6771976 A JP6771976 A JP 6771976A JP 6771976 A JP6771976 A JP 6771976A JP S52151505 A JPS52151505 A JP S52151505A
Authority
JP
Japan
Prior art keywords
sending system
alarm sending
transmission
make
alarm
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
JP6771976A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5744266B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Yoshiharu Kondo
Tsutomu Minoshima
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6771976A priority Critical patent/JPS52151505A/ja
Publication of JPS52151505A publication Critical patent/JPS52151505A/ja
Publication of JPS5744266B2 publication Critical patent/JPS5744266B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/08—Indicating faults in circuits or apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
JP6771976A 1976-06-11 1976-06-11 Alarm sending system Granted JPS52151505A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6771976A JPS52151505A (en) 1976-06-11 1976-06-11 Alarm sending system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6771976A JPS52151505A (en) 1976-06-11 1976-06-11 Alarm sending system

Publications (2)

Publication Number Publication Date
JPS52151505A true JPS52151505A (en) 1977-12-16
JPS5744266B2 JPS5744266B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1982-09-20

Family

ID=13353032

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6771976A Granted JPS52151505A (en) 1976-06-11 1976-06-11 Alarm sending system

Country Status (1)

Country Link
JP (1) JPS52151505A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5167718A (en) * 1974-12-06 1976-06-11 Daicel Ltd 22 merukaputo pirijin n okisaidoaenennoseizoho

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5167718A (en) * 1974-12-06 1976-06-11 Daicel Ltd 22 merukaputo pirijin n okisaidoaenennoseizoho

Also Published As

Publication number Publication date
JPS5744266B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1982-09-20

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