JPS53105104A - Key telephone set - Google Patents

Key telephone set

Info

Publication number
JPS53105104A
JPS53105104A JP1996577A JP1996577A JPS53105104A JP S53105104 A JPS53105104 A JP S53105104A JP 1996577 A JP1996577 A JP 1996577A JP 1996577 A JP1996577 A JP 1996577A JP S53105104 A JPS53105104 A JP S53105104A
Authority
JP
Japan
Prior art keywords
telephone set
key telephone
eliminate
causing
reduce
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
JP1996577A
Other languages
Japanese (ja)
Inventor
Mamoru Senzai
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP1996577A priority Critical patent/JPS53105104A/en
Publication of JPS53105104A publication Critical patent/JPS53105104A/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
    • H04M9/006—Exchange line circuits

Landscapes

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

Abstract

PURPOSE:To reduce the number of cable conductors between the main unit and telephone set by causing the holding operation via a talking line so as to eliminate the need for control lines.
JP1996577A 1977-02-24 1977-02-24 Key telephone set Pending JPS53105104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1996577A JPS53105104A (en) 1977-02-24 1977-02-24 Key telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1996577A JPS53105104A (en) 1977-02-24 1977-02-24 Key telephone set

Publications (1)

Publication Number Publication Date
JPS53105104A true JPS53105104A (en) 1978-09-13

Family

ID=12013898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1996577A Pending JPS53105104A (en) 1977-02-24 1977-02-24 Key telephone set

Country Status (1)

Country Link
JP (1) JPS53105104A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60123193A (en) * 1983-12-07 1985-07-01 Matsushita Electric Ind Co Ltd Key telephone set

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60123193A (en) * 1983-12-07 1985-07-01 Matsushita Electric Ind Co Ltd Key telephone set
JPH0584114B2 (en) * 1983-12-07 1993-11-30 Matsushita Electric Ind Co Ltd

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