JPS53101205A - Circuit extension method for key telephone - Google Patents

Circuit extension method for key telephone

Info

Publication number
JPS53101205A
JPS53101205A JP1571177A JP1571177A JPS53101205A JP S53101205 A JPS53101205 A JP S53101205A JP 1571177 A JP1571177 A JP 1571177A JP 1571177 A JP1571177 A JP 1571177A JP S53101205 A JPS53101205 A JP S53101205A
Authority
JP
Japan
Prior art keywords
key telephone
extension method
circuit extension
circuit
cost
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
JP1571177A
Other languages
Japanese (ja)
Inventor
Yuzo Izumitani
Tadashi Akiyama
Koichiro Suda
Yukio Matsumoto
Tadahiro Toki
Kenji Sawada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP1571177A priority Critical patent/JPS53101205A/en
Publication of JPS53101205A publication Critical patent/JPS53101205A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/71—Substation extension arrangements

Landscapes

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

Abstract

PURPOSE:To reduce the cost at the initial mounting time by adding all component parts for the extension circuit use.
JP1571177A 1977-02-16 1977-02-16 Circuit extension method for key telephone Pending JPS53101205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1571177A JPS53101205A (en) 1977-02-16 1977-02-16 Circuit extension method for key telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1571177A JPS53101205A (en) 1977-02-16 1977-02-16 Circuit extension method for key telephone

Publications (1)

Publication Number Publication Date
JPS53101205A true JPS53101205A (en) 1978-09-04

Family

ID=11896343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1571177A Pending JPS53101205A (en) 1977-02-16 1977-02-16 Circuit extension method for key telephone

Country Status (1)

Country Link
JP (1) JPS53101205A (en)

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