JPS5267504A - Speaking current supply and supervision system - Google Patents

Speaking current supply and supervision system

Info

Publication number
JPS5267504A
JPS5267504A JP14240375A JP14240375A JPS5267504A JP S5267504 A JPS5267504 A JP S5267504A JP 14240375 A JP14240375 A JP 14240375A JP 14240375 A JP14240375 A JP 14240375A JP S5267504 A JPS5267504 A JP S5267504A
Authority
JP
Japan
Prior art keywords
current supply
supervision system
current
speaking
subscriber
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
JP14240375A
Other languages
Japanese (ja)
Other versions
JPS5337683B2 (en
Inventor
Noboru Ito
Nobuyoshi Akiyama
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
Oki Electric Industry Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Oki Electric Industry 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 Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP14240375A priority Critical patent/JPS5267504A/en
Publication of JPS5267504A publication Critical patent/JPS5267504A/en
Publication of JPS5337683B2 publication Critical patent/JPS5337683B2/ja
Granted 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)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To enable a simplified control by supplying automatically subscriber speaking current and PNPN element holding current in subscriber line side, and by performing the current supervision for the subscriber lines, restoring control of PNPN element, and sending of high level signal in trunk side.
JP14240375A 1975-12-02 1975-12-02 Speaking current supply and supervision system Granted JPS5267504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14240375A JPS5267504A (en) 1975-12-02 1975-12-02 Speaking current supply and supervision system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14240375A JPS5267504A (en) 1975-12-02 1975-12-02 Speaking current supply and supervision system

Publications (2)

Publication Number Publication Date
JPS5267504A true JPS5267504A (en) 1977-06-04
JPS5337683B2 JPS5337683B2 (en) 1978-10-11

Family

ID=15314523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14240375A Granted JPS5267504A (en) 1975-12-02 1975-12-02 Speaking current supply and supervision system

Country Status (1)

Country Link
JP (1) JPS5267504A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119807A (en) * 1976-04-01 1977-10-07 Meisei Electric Co Ltd Circuit for discriminating using state of transmission line for automatic switching system
JPS54159114A (en) * 1978-06-02 1979-12-15 Cselt Centro Studi Lab Telecom Electronic telephone circuit for subscriber channel
JPS572189A (en) * 1980-06-04 1982-01-07 Oki Electric Ind Co Ltd Trunk switching circuit
KR20210143075A (en) * 2020-05-19 2021-11-26 삼성에스디아이 주식회사 Epoxy resin composition for semiconductor device encapsulating film, semiconductor device encapsulating film and semiconductor device encapsulated using the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61139173U (en) * 1985-10-30 1986-08-28

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52119807A (en) * 1976-04-01 1977-10-07 Meisei Electric Co Ltd Circuit for discriminating using state of transmission line for automatic switching system
JPS5533235B2 (en) * 1976-04-01 1980-08-29
JPS54159114A (en) * 1978-06-02 1979-12-15 Cselt Centro Studi Lab Telecom Electronic telephone circuit for subscriber channel
JPS5853542B2 (en) * 1978-06-02 1983-11-30 シ エツセ エ エレ チ−セントロ ステユデイ エ ラボラトリ テレコミニカチオ−ニ エツセ ピ− ア− Electronic telephone circuit for subscriber lines
JPS572189A (en) * 1980-06-04 1982-01-07 Oki Electric Ind Co Ltd Trunk switching circuit
JPS6223951B2 (en) * 1980-06-04 1987-05-26 Oki Denki Kogyo Kk
KR20210143075A (en) * 2020-05-19 2021-11-26 삼성에스디아이 주식회사 Epoxy resin composition for semiconductor device encapsulating film, semiconductor device encapsulating film and semiconductor device encapsulated using the same

Also Published As

Publication number Publication date
JPS5337683B2 (en) 1978-10-11

Similar Documents

Publication Publication Date Title
JPS5372403A (en) Loop communication system
JPS5267504A (en) Speaking current supply and supervision system
JPS522106A (en) Loop around connection control system
JPS5331911A (en) Control system for subscriber dial-tone
JPS5212514A (en) Power supply converting method
JPS523319A (en) Crosstalk reduction system
JPS5279704A (en) Holding system in key telephone system
JPS5222410A (en) Trunk line for connection
JPS5235908A (en) Line concentration system
JPS5410607A (en) Power supply circuit for key telephone system
JPS5337306A (en) Communicating current feed circuit
JPS52127015A (en) Line selection system
JPS51138306A (en) Control apparatus for communication line
JPS51115712A (en) Call detection method in automatic telephone exchange
JPS5242009A (en) Hand free response control system
JPS5375806A (en) Individual selective calling receiver
JPS5348602A (en) Voice control system
JPS53139413A (en) Polarity correcting system
JPS51120607A (en) Pcm regenerative repeater
JPS5261406A (en) Laser communication system
JPS5237707A (en) Signal quality improving system of ssra communication
JPS51138845A (en) Pilot wire relay system
JPS51147905A (en) Busy indication circuit in a switch-box type additional telephone set
JPS5384511A (en) Line concentrator
JPS51147946A (en) Feed back type amplifier