JPS5279706A - Subscriber line calling system in key telephone unit - Google Patents

Subscriber line calling system in key telephone unit

Info

Publication number
JPS5279706A
JPS5279706A JP15672575A JP15672575A JPS5279706A JP S5279706 A JPS5279706 A JP S5279706A JP 15672575 A JP15672575 A JP 15672575A JP 15672575 A JP15672575 A JP 15672575A JP S5279706 A JPS5279706 A JP S5279706A
Authority
JP
Japan
Prior art keywords
subscriber line
telephone unit
key telephone
calling system
line 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
JP15672575A
Other languages
Japanese (ja)
Other versions
JPS5513668B2 (en
Inventor
Koichi Sekiguchi
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 JP15672575A priority Critical patent/JPS5279706A/en
Publication of JPS5279706A publication Critical patent/JPS5279706A/en
Priority to US05/967,017 priority patent/US4254306A/en
Publication of JPS5513668B2 publication Critical patent/JPS5513668B2/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
    • H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties

Landscapes

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

Abstract

PURPOSE:To enable subscriber line calling without deleting each function of the telephone unit, by using very fewer number of cable conductor wires than conventional systems.
JP15672575A 1975-12-26 1975-12-26 Subscriber line calling system in key telephone unit Granted JPS5279706A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP15672575A JPS5279706A (en) 1975-12-26 1975-12-26 Subscriber line calling system in key telephone unit
US05/967,017 US4254306A (en) 1975-12-26 1978-12-06 Key telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15672575A JPS5279706A (en) 1975-12-26 1975-12-26 Subscriber line calling system in key telephone unit

Publications (2)

Publication Number Publication Date
JPS5279706A true JPS5279706A (en) 1977-07-05
JPS5513668B2 JPS5513668B2 (en) 1980-04-10

Family

ID=15633956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15672575A Granted JPS5279706A (en) 1975-12-26 1975-12-26 Subscriber line calling system in key telephone unit

Country Status (1)

Country Link
JP (1) JPS5279706A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104008A (en) * 1976-02-27 1977-09-01 Taiko Denki Seisakusho:Kk Connecting method of button telephone apparatus
JPS52116004A (en) * 1976-03-26 1977-09-29 Kanda Tsushin Kogyo Kk Voice call system
JPS5335306A (en) * 1976-09-13 1978-04-01 Meisei Electric Co Ltd Party line telephone system
JPS53103304A (en) * 1977-02-22 1978-09-08 Nakayo Telecommunications Button telephone set circuit system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0731149U (en) * 1994-11-22 1995-06-13 三菱化工機株式会社 Screw type decanter

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104008A (en) * 1976-02-27 1977-09-01 Taiko Denki Seisakusho:Kk Connecting method of button telephone apparatus
JPS5522987B2 (en) * 1976-02-27 1980-06-20
JPS52116004A (en) * 1976-03-26 1977-09-29 Kanda Tsushin Kogyo Kk Voice call system
JPS5335306A (en) * 1976-09-13 1978-04-01 Meisei Electric Co Ltd Party line telephone system
JPS5519104B2 (en) * 1976-09-13 1980-05-23
JPS53103304A (en) * 1977-02-22 1978-09-08 Nakayo Telecommunications Button telephone set circuit system

Also Published As

Publication number Publication date
JPS5513668B2 (en) 1980-04-10

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