JP2540603Y2 - ボタン電話装置 - Google Patents

ボタン電話装置

Info

Publication number
JP2540603Y2
JP2540603Y2 JP1990034994U JP3499490U JP2540603Y2 JP 2540603 Y2 JP2540603 Y2 JP 2540603Y2 JP 1990034994 U JP1990034994 U JP 1990034994U JP 3499490 U JP3499490 U JP 3499490U JP 2540603 Y2 JP2540603 Y2 JP 2540603Y2
Authority
JP
Japan
Prior art keywords
line
bus
key telephone
relay
external
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
JP1990034994U
Other languages
English (en)
Japanese (ja)
Other versions
JPH03125591U (enrdf_load_stackoverflow
Inventor
丈二 田中
愼一 篠原
徹 松嶋
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP1990034994U priority Critical patent/JP2540603Y2/ja
Publication of JPH03125591U publication Critical patent/JPH03125591U/ja
Application granted granted Critical
Publication of JP2540603Y2 publication Critical patent/JP2540603Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP1990034994U 1990-03-30 1990-03-30 ボタン電話装置 Expired - Lifetime JP2540603Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990034994U JP2540603Y2 (ja) 1990-03-30 1990-03-30 ボタン電話装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990034994U JP2540603Y2 (ja) 1990-03-30 1990-03-30 ボタン電話装置

Publications (2)

Publication Number Publication Date
JPH03125591U JPH03125591U (enrdf_load_stackoverflow) 1991-12-18
JP2540603Y2 true JP2540603Y2 (ja) 1997-07-09

Family

ID=31539965

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990034994U Expired - Lifetime JP2540603Y2 (ja) 1990-03-30 1990-03-30 ボタン電話装置

Country Status (1)

Country Link
JP (1) JP2540603Y2 (enrdf_load_stackoverflow)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59221098A (ja) * 1983-05-31 1984-12-12 Toshiba Corp ボタン電話装置の端末インタフエ−ス装置
JPS60150868U (ja) * 1984-03-16 1985-10-07 株式会社　宮川製作所 簡易型交換電話装置
JPS61103356A (ja) * 1984-10-26 1986-05-21 Matsushita Electric Ind Co Ltd ボタン電話装置

Also Published As

Publication number Publication date
JPH03125591U (enrdf_load_stackoverflow) 1991-12-18

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