JPS6457866A - Feeding current control circuit - Google Patents

Feeding current control circuit

Info

Publication number
JPS6457866A
JPS6457866A JP62214201A JP21420187A JPS6457866A JP S6457866 A JPS6457866 A JP S6457866A JP 62214201 A JP62214201 A JP 62214201A JP 21420187 A JP21420187 A JP 21420187A JP S6457866 A JPS6457866 A JP S6457866A
Authority
JP
Japan
Prior art keywords
current
digital exchange
feeding
current control
subscriber line
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
JP62214201A
Other languages
Japanese (ja)
Inventor
Seiji Miyoshi
Kiyoshi Shibuya
Takashi Sato
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
Original Assignee
Fujitsu 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 filed Critical Fujitsu Ltd
Priority to JP62214201A priority Critical patent/JPS6457866A/en
Publication of JPS6457866A publication Critical patent/JPS6457866A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent a function of a digital exchange from being stopped by decreasing a DC current fed from each subscriber circuit to a subscriber line when the digital exchange is in the contention state. CONSTITUTION:Feeding circuits 2, 3 supply a DC current I to a subscriber line 1. A current control means 100 increases an equivalent feeding resistance in the feeding circuits 2, 3 to a prescribed value when the digital exchange is in contention and feeding control information (c) is given thereby reducing the DC current I. Thus, the DC current supplied from each subscriber circuit to the subscriber line is decreased, the load of the DC power supply is relieved and the drooping of the DC power supply voltage is prevented and the stopping of the function of the digital exchange is prevented.
JP62214201A 1987-08-28 1987-08-28 Feeding current control circuit Pending JPS6457866A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62214201A JPS6457866A (en) 1987-08-28 1987-08-28 Feeding current control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62214201A JPS6457866A (en) 1987-08-28 1987-08-28 Feeding current control circuit

Publications (1)

Publication Number Publication Date
JPS6457866A true JPS6457866A (en) 1989-03-06

Family

ID=16651904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62214201A Pending JPS6457866A (en) 1987-08-28 1987-08-28 Feeding current control circuit

Country Status (1)

Country Link
JP (1) JPS6457866A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5323453A (en) * 1990-03-15 1994-06-21 Telefonaktiebolaget L M Ericsson Power down feed
JP2009027611A (en) * 2007-07-23 2009-02-05 Nec Commun Syst Ltd Speech current control method and apparatus, exchange, and program

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5323453A (en) * 1990-03-15 1994-06-21 Telefonaktiebolaget L M Ericsson Power down feed
JP2009027611A (en) * 2007-07-23 2009-02-05 Nec Commun Syst Ltd Speech current control method and apparatus, exchange, and program

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