JPS5251805A - Key telephone device - Google Patents

Key telephone device

Info

Publication number
JPS5251805A
JPS5251805A JP50127292A JP12729275A JPS5251805A JP S5251805 A JPS5251805 A JP S5251805A JP 50127292 A JP50127292 A JP 50127292A JP 12729275 A JP12729275 A JP 12729275A JP S5251805 A JPS5251805 A JP S5251805A
Authority
JP
Japan
Prior art keywords
telephone device
key telephone
extension lines
line
station line
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
JP50127292A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5717398B2 (enExample
Inventor
Masayoshi Oshima
Isao Wakamatsu
Akio Oki
Seiji Sasaki
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.)
Oki Electric Industry Co Ltd
Taiko Electric Works Ltd
Original Assignee
Oki Electric Industry Co Ltd
Taiko Electric Works 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 Oki Electric Industry Co Ltd, Taiko Electric Works Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP50127292A priority Critical patent/JPS5251805A/ja
Publication of JPS5251805A publication Critical patent/JPS5251805A/ja
Publication of JPS5717398B2 publication Critical patent/JPS5717398B2/ja
Granted 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
    • H04M9/003—Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP50127292A 1975-10-24 1975-10-24 Key telephone device Granted JPS5251805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50127292A JPS5251805A (en) 1975-10-24 1975-10-24 Key telephone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50127292A JPS5251805A (en) 1975-10-24 1975-10-24 Key telephone device

Publications (2)

Publication Number Publication Date
JPS5251805A true JPS5251805A (en) 1977-04-26
JPS5717398B2 JPS5717398B2 (enExample) 1982-04-10

Family

ID=14956342

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50127292A Granted JPS5251805A (en) 1975-10-24 1975-10-24 Key telephone device

Country Status (1)

Country Link
JP (1) JPS5251805A (enExample)

Also Published As

Publication number Publication date
JPS5717398B2 (enExample) 1982-04-10

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees