JPS58210787A - ボタン電話装置に於ける停電対策方式 - Google Patents

ボタン電話装置に於ける停電対策方式

Info

Publication number
JPS58210787A
JPS58210787A JP9338882A JP9338882A JPS58210787A JP S58210787 A JPS58210787 A JP S58210787A JP 9338882 A JP9338882 A JP 9338882A JP 9338882 A JP9338882 A JP 9338882A JP S58210787 A JPS58210787 A JP S58210787A
Authority
JP
Japan
Prior art keywords
relay
telephone
power outage
power
line
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
JP9338882A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0237754B2 (enrdf_load_stackoverflow
Inventor
Katsumi Fujikawa
藤川　克美
Katsura Kosemura
桂 小瀬村
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.)
Kanda Tsushin Kogyo Co Ltd
Original Assignee
Kanda Tsushin Kogyo 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 Kanda Tsushin Kogyo Co Ltd filed Critical Kanda Tsushin Kogyo Co Ltd
Priority to JP9338882A priority Critical patent/JPS58210787A/ja
Publication of JPS58210787A publication Critical patent/JPS58210787A/ja
Publication of JPH0237754B2 publication Critical patent/JPH0237754B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
    • H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP9338882A 1982-06-01 1982-06-01 ボタン電話装置に於ける停電対策方式 Granted JPS58210787A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9338882A JPS58210787A (ja) 1982-06-01 1982-06-01 ボタン電話装置に於ける停電対策方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9338882A JPS58210787A (ja) 1982-06-01 1982-06-01 ボタン電話装置に於ける停電対策方式

Publications (2)

Publication Number Publication Date
JPS58210787A true JPS58210787A (ja) 1983-12-08
JPH0237754B2 JPH0237754B2 (enrdf_load_stackoverflow) 1990-08-27

Family

ID=14080923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9338882A Granted JPS58210787A (ja) 1982-06-01 1982-06-01 ボタン電話装置に於ける停電対策方式

Country Status (1)

Country Link
JP (1) JPS58210787A (enrdf_load_stackoverflow)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5725768A (en) * 1980-07-22 1982-02-10 Iwatsu Electric Co Ltd Power off circuit of telephone exchange

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5725768A (en) * 1980-07-22 1982-02-10 Iwatsu Electric Co Ltd Power off circuit of telephone exchange

Also Published As

Publication number Publication date
JPH0237754B2 (enrdf_load_stackoverflow) 1990-08-27

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