JPS53114304A - Key telephone set - Google Patents

Key telephone set

Info

Publication number
JPS53114304A
JPS53114304A JP2807477A JP2807477A JPS53114304A JP S53114304 A JPS53114304 A JP S53114304A JP 2807477 A JP2807477 A JP 2807477A JP 2807477 A JP2807477 A JP 2807477A JP S53114304 A JPS53114304 A JP S53114304A
Authority
JP
Japan
Prior art keywords
telephone set
key telephone
bettery
viewpoint
independent
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
JP2807477A
Other languages
Japanese (ja)
Inventor
Gunzo Kita
Koji Oishi
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
Original Assignee
Iwatsu Electric 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP2807477A priority Critical patent/JPS53114304A/en
Publication of JPS53114304A publication Critical patent/JPS53114304A/en
Pending 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)

Abstract

PURPOSE:To improve efficiency from the viewpoint of construction and economical point with the number of lines connecting a trunk circuit with a key telephone set reduced by providing an independent bettery.
JP2807477A 1977-03-16 1977-03-16 Key telephone set Pending JPS53114304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2807477A JPS53114304A (en) 1977-03-16 1977-03-16 Key telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2807477A JPS53114304A (en) 1977-03-16 1977-03-16 Key telephone set

Publications (1)

Publication Number Publication Date
JPS53114304A true JPS53114304A (en) 1978-10-05

Family

ID=12238615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2807477A Pending JPS53114304A (en) 1977-03-16 1977-03-16 Key telephone set

Country Status (1)

Country Link
JP (1) JPS53114304A (en)

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