JPS5410603A - Main wire catching circuit for key telephone system - Google Patents

Main wire catching circuit for key telephone system

Info

Publication number
JPS5410603A
JPS5410603A JP7492977A JP7492977A JPS5410603A JP S5410603 A JPS5410603 A JP S5410603A JP 7492977 A JP7492977 A JP 7492977A JP 7492977 A JP7492977 A JP 7492977A JP S5410603 A JPS5410603 A JP S5410603A
Authority
JP
Japan
Prior art keywords
main wire
telephone system
key telephone
wire catching
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
JP7492977A
Other languages
Japanese (ja)
Other versions
JPS587119B2 (en
Inventor
Koichi Sekiguchi
Hikari Takematsu
Kazutada Katsukura
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 JP7492977A priority Critical patent/JPS587119B2/en
Priority to US05/917,578 priority patent/US4234765A/en
Publication of JPS5410603A publication Critical patent/JPS5410603A/en
Publication of JPS587119B2 publication Critical patent/JPS587119B2/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
    • H04M9/022—Multiplex systems

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 transmitting the main wire catch signal sent from the telephone telephone through the time division to be increased the speed andthen catching the optional main wire after the dial information is added.
JP7492977A 1977-06-25 1977-06-25 Central line acquisition circuit for button telephone equipment Expired JPS587119B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP7492977A JPS587119B2 (en) 1977-06-25 1977-06-25 Central line acquisition 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
JP7492977A JPS587119B2 (en) 1977-06-25 1977-06-25 Central line acquisition circuit for button telephone equipment

Publications (2)

Publication Number Publication Date
JPS5410603A true JPS5410603A (en) 1979-01-26
JPS587119B2 JPS587119B2 (en) 1983-02-08

Family

ID=13561527

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7492977A Expired JPS587119B2 (en) 1977-06-25 1977-06-25 Central line acquisition circuit for button telephone equipment

Country Status (1)

Country Link
JP (1) JPS587119B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59158191A (en) * 1983-02-26 1984-09-07 Tamura Electric Works Ltd Key telephone set

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59158191A (en) * 1983-02-26 1984-09-07 Tamura Electric Works Ltd Key telephone set

Also Published As

Publication number Publication date
JPS587119B2 (en) 1983-02-08

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