JPS526404A - Calling system of the button telephone set - Google Patents

Calling system of the button telephone set

Info

Publication number
JPS526404A
JPS526404A JP8294375A JP8294375A JPS526404A JP S526404 A JPS526404 A JP S526404A JP 8294375 A JP8294375 A JP 8294375A JP 8294375 A JP8294375 A JP 8294375A JP S526404 A JPS526404 A JP S526404A
Authority
JP
Japan
Prior art keywords
telephone set
button telephone
calling system
button
calling
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
JP8294375A
Other languages
Japanese (ja)
Other versions
JPS5831068B2 (en
Inventor
Juichi Takano
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.)
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
Original Assignee
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
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 Iwatsu Electric Co Ltd, Iwasaki Tsushinki KK filed Critical Iwatsu Electric Co Ltd
Priority to JP50082943A priority Critical patent/JPS5831068B2/en
Publication of JPS526404A publication Critical patent/JPS526404A/en
Publication of JPS5831068B2 publication Critical patent/JPS5831068B2/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:Simple and low cost hand-free telephone communication by the existing calling wires and button telephone set.
JP50082943A 1975-07-04 1975-07-04 Buttondenwasouchiniokel Expired JPS5831068B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50082943A JPS5831068B2 (en) 1975-07-04 1975-07-04 Buttondenwasouchiniokel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50082943A JPS5831068B2 (en) 1975-07-04 1975-07-04 Buttondenwasouchiniokel

Publications (2)

Publication Number Publication Date
JPS526404A true JPS526404A (en) 1977-01-18
JPS5831068B2 JPS5831068B2 (en) 1983-07-04

Family

ID=13788289

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50082943A Expired JPS5831068B2 (en) 1975-07-04 1975-07-04 Buttondenwasouchiniokel

Country Status (1)

Country Link
JP (1) JPS5831068B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50124507A (en) * 1974-03-19 1975-09-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50124507A (en) * 1974-03-19 1975-09-30

Also Published As

Publication number Publication date
JPS5831068B2 (en) 1983-07-04

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