JPS5410604A - Main wire holding circuit for key telephone system - Google Patents

Main wire holding circuit for key telephone system

Info

Publication number
JPS5410604A
JPS5410604A JP7493077A JP7493077A JPS5410604A JP S5410604 A JPS5410604 A JP S5410604A JP 7493077 A JP7493077 A JP 7493077A JP 7493077 A JP7493077 A JP 7493077A JP S5410604 A JPS5410604 A JP S5410604A
Authority
JP
Japan
Prior art keywords
main wire
telephone system
holding circuit
wire holding
key telephone
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
JP7493077A
Other languages
Japanese (ja)
Other versions
JPS586439B2 (en
Inventor
Koichi Sekiguchi
Kazutada Katsukura
Hikari Takematsu
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
Original Assignee
Iwatsu 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP7493077A priority Critical patent/JPS586439B2/en
Priority to US05/917,578 priority patent/US4234765A/en
Publication of JPS5410604A publication Critical patent/JPS5410604A/en
Publication of JPS586439B2 publication Critical patent/JPS586439B2/en
Expired 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)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To reduce the number of the cable core between the main equipment and the telephone set, by receiving in time division both the main wire catch signal and the holding information andthen transmitting them to the trunk circuit after converting into the holding information with every main wire in order to hold the optional main wire.
JP7493077A 1977-06-25 1977-06-25 Office line hold circuit for button telephone equipment Expired JPS586439B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP7493077A JPS586439B2 (en) 1977-06-25 1977-06-25 Office line hold circuit for button telephone equipment
US05/917,578 US4234765A (en) 1977-06-25 1978-06-21 Key telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7493077A JPS586439B2 (en) 1977-06-25 1977-06-25 Office line hold circuit for button telephone equipment

Publications (2)

Publication Number Publication Date
JPS5410604A true JPS5410604A (en) 1979-01-26
JPS586439B2 JPS586439B2 (en) 1983-02-04

Family

ID=13561555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7493077A Expired JPS586439B2 (en) 1977-06-25 1977-06-25 Office line hold circuit for button telephone equipment

Country Status (1)

Country Link
JP (1) JPS586439B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6131545U (en) * 1984-07-27 1986-02-25 大塚化学株式会社 wood grain decorative board
JP2851337B2 (en) * 1988-03-17 1999-01-27 グランストローム，ステファン Container

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6131545U (en) * 1984-07-27 1986-02-25 大塚化学株式会社 wood grain decorative board
JP2851337B2 (en) * 1988-03-17 1999-01-27 グランストローム，ステファン Container

Also Published As

Publication number Publication date
JPS586439B2 (en) 1983-02-04

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