JPS53103304A - Button telephone set circuit system - Google Patents

Button telephone set circuit system

Info

Publication number
JPS53103304A
JPS53103304A JP1776677A JP1776677A JPS53103304A JP S53103304 A JPS53103304 A JP S53103304A JP 1776677 A JP1776677 A JP 1776677A JP 1776677 A JP1776677 A JP 1776677A JP S53103304 A JPS53103304 A JP S53103304A
Authority
JP
Japan
Prior art keywords
circuit system
telephone set
set circuit
button telephone
button
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.)
Pending
Application number
JP1776677A
Other languages
Japanese (ja)
Inventor
Masahiro Sarutani
Wataru Gotou
Takemi Shiyouji
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.)
Nakayo Telecommunications Inc
Original Assignee
Nakayo Telecommunications Inc
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 Nakayo Telecommunications Inc filed Critical Nakayo Telecommunications Inc
Priority to JP1776677A priority Critical patent/JPS53103304A/en
Publication of JPS53103304A publication Critical patent/JPS53103304A/en
Pending legal-status Critical Current

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP1776677A 1977-02-22 1977-02-22 Button telephone set circuit system Pending JPS53103304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1776677A JPS53103304A (en) 1977-02-22 1977-02-22 Button telephone set circuit system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1776677A JPS53103304A (en) 1977-02-22 1977-02-22 Button telephone set circuit system

Publications (1)

Publication Number Publication Date
JPS53103304A true JPS53103304A (en) 1978-09-08

Family

ID=11952821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1776677A Pending JPS53103304A (en) 1977-02-22 1977-02-22 Button telephone set circuit system

Country Status (1)

Country Link
JP (1) JPS53103304A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62239787A (en) * 1986-04-11 1987-10-20 Matsushita Electric Ind Co Ltd Key telephone system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5279706A (en) * 1975-12-26 1977-07-05 Iwatsu Electric Co Ltd Subscriber line calling system in key telephone unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5279706A (en) * 1975-12-26 1977-07-05 Iwatsu Electric Co Ltd Subscriber line calling system in key telephone unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62239787A (en) * 1986-04-11 1987-10-20 Matsushita Electric Ind Co Ltd Key telephone system
JP2506658B2 (en) * 1986-04-11 1996-06-12 松下電器産業株式会社 Button telephone device

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