JPH0415343U - - Google Patents

Info

Publication number
JPH0415343U
JPH0415343U JP5465290U JP5465290U JPH0415343U JP H0415343 U JPH0415343 U JP H0415343U JP 5465290 U JP5465290 U JP 5465290U JP 5465290 U JP5465290 U JP 5465290U JP H0415343 U JPH0415343 U JP H0415343U
Authority
JP
Japan
Prior art keywords
power outage
telephone
central office
office line
detection means
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
JP5465290U
Other languages
English (en)
Japanese (ja)
Other versions
JP2513432Y2 (ja
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 filed Critical
Priority to JP1990054652U priority Critical patent/JP2513432Y2/ja
Publication of JPH0415343U publication Critical patent/JPH0415343U/ja
Application granted granted Critical
Publication of JP2513432Y2 publication Critical patent/JP2513432Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Monitoring And Testing Of Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP1990054652U 1990-05-28 1990-05-28 電話装置の停電切替回路 Expired - Lifetime JP2513432Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990054652U JP2513432Y2 (ja) 1990-05-28 1990-05-28 電話装置の停電切替回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990054652U JP2513432Y2 (ja) 1990-05-28 1990-05-28 電話装置の停電切替回路

Publications (2)

Publication Number Publication Date
JPH0415343U true JPH0415343U (enExample) 1992-02-07
JP2513432Y2 JP2513432Y2 (ja) 1996-10-09

Family

ID=31576905

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990054652U Expired - Lifetime JP2513432Y2 (ja) 1990-05-28 1990-05-28 電話装置の停電切替回路

Country Status (1)

Country Link
JP (1) JP2513432Y2 (enExample)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6242697A (ja) * 1985-08-20 1987-02-24 Matsushita Electric Ind Co Ltd ボタン電話装置
JPS63164561A (ja) * 1986-12-25 1988-07-07 Fujitsu Ltd 停電用電話端末装置
JPS63283340A (ja) * 1987-05-15 1988-11-21 Nippon Telegr & Teleph Corp <Ntt> 電話システムの停電通話保証方式

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6242697A (ja) * 1985-08-20 1987-02-24 Matsushita Electric Ind Co Ltd ボタン電話装置
JPS63164561A (ja) * 1986-12-25 1988-07-07 Fujitsu Ltd 停電用電話端末装置
JPS63283340A (ja) * 1987-05-15 1988-11-21 Nippon Telegr & Teleph Corp <Ntt> 電話システムの停電通話保証方式

Also Published As

Publication number Publication date
JP2513432Y2 (ja) 1996-10-09

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