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JPS5698063A - Key telephone system - Google Patents

Key telephone system

Info

Publication number
JPS5698063A
JPS5698063A JP79480A JP79480A JPS5698063A JP S5698063 A JPS5698063 A JP S5698063A JP 79480 A JP79480 A JP 79480A JP 79480 A JP79480 A JP 79480A JP S5698063 A JPS5698063 A JP S5698063A
Authority
JP
Japan
Prior art keywords
key telephone
line
lines
trunk
icm1
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
JP79480A
Other languages
Japanese (ja)
Inventor
Teruyuki Kubo
Kazuyuki Yamamoto
Isao Kawashima
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP79480A priority Critical patent/JPS5698063A/en
Publication of JPS5698063A publication Critical patent/JPS5698063A/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 realize a better economical property with a mass production as well as an effective use of the existing equipment, by using a type of the decentralized control type key telephone device. CONSTITUTION:The key telephone device 1 is formed by connecting in multiple system plural number of key telephone sets 11 or 12 to the trunk line CO1-1 or CO1-m, the extension call line ICM1-1 or ICM1-l and the signal line DTL-a respectively. The key telephone device 2 is formed by connecting in multiple system plural number of key telephone sets 21 or 22 to the trunk line CO2-1 or CO2-m, the extension call line ICM2-1 or ICM2-l and the signal line DTL-2 each. The connecting device 3 connects the two telephone devices 1 and 2 to each other, and thus the trunk lines, the extension lines and the signal lines are connected between the both telephone devices.
JP79480A 1980-01-08 1980-01-08 Key telephone system Pending JPS5698063A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP79480A JPS5698063A (en) 1980-01-08 1980-01-08 Key telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP79480A JPS5698063A (en) 1980-01-08 1980-01-08 Key telephone system

Publications (1)

Publication Number Publication Date
JPS5698063A true JPS5698063A (en) 1981-08-07

Family

ID=11483579

Family Applications (1)

Application Number Title Priority Date Filing Date
JP79480A Pending JPS5698063A (en) 1980-01-08 1980-01-08 Key telephone system

Country Status (1)

Country Link
JP (1) JPS5698063A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6232758A (en) * 1985-08-05 1987-02-12 Nec Corp Key telephone set

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6232758A (en) * 1985-08-05 1987-02-12 Nec Corp Key telephone set

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