JPS6457866A - Feeding current control circuit - Google Patents
Feeding current control circuitInfo
- 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
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.
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)
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 |
-
1987
- 1987-08-28 JP JP62214201A patent/JPS6457866A/en active Pending
Cited By (2)
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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