JPS56122585A - Interruption connecting method - Google Patents

Interruption connecting method

Info

Publication number
JPS56122585A
JPS56122585A JP2532280A JP2532280A JPS56122585A JP S56122585 A JPS56122585 A JP S56122585A JP 2532280 A JP2532280 A JP 2532280A JP 2532280 A JP2532280 A JP 2532280A JP S56122585 A JPS56122585 A JP S56122585A
Authority
JP
Japan
Prior art keywords
constant current
link
interrupted
interruption
fine
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
JP2532280A
Other languages
Japanese (ja)
Inventor
Kimifumi Kojima
Akira Kikuchi
Kazuhiko Akata
Junji Asakura
Haruki Fukuda
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.)
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP2532280A priority Critical patent/JPS56122585A/en
Publication of JPS56122585A publication Critical patent/JPS56122585A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/521—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using semiconductors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To eliminate the influence of a speech current while turning on a semiconductor switch by flowing a constant current to a link to be interrupted via an interruption line in a telephone switchboard having a space-division network. CONSTITUTION:When interruption link 5 is connected by interruption to link 4 to be interrupted via switch PSW, a fine constant current flows from constant current supply circuit 11 in interruption trunk 9' to a loop via telephone set 1. This constant current reduces the on resistance of semiconductor switching element 3' and results in economy. Further, since the fine constant current is supplied from constant current supply circuit 11, the fine constant current flows to the link to be interrupted regardless of the value of the impedance of the link to be interrupted, so that the influence of the link to be interrupted upon an increase and decrease in speech current can nearly be ignored.
JP2532280A 1980-03-03 1980-03-03 Interruption connecting method Pending JPS56122585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2532280A JPS56122585A (en) 1980-03-03 1980-03-03 Interruption connecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2532280A JPS56122585A (en) 1980-03-03 1980-03-03 Interruption connecting method

Publications (1)

Publication Number Publication Date
JPS56122585A true JPS56122585A (en) 1981-09-26

Family

ID=12162737

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2532280A Pending JPS56122585A (en) 1980-03-03 1980-03-03 Interruption connecting method

Country Status (1)

Country Link
JP (1) JPS56122585A (en)

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