JPS6426334A - Power supply system of net terminating set - Google Patents
Power supply system of net terminating setInfo
- Publication number
- JPS6426334A JPS6426334A JP62179035A JP17903587A JPS6426334A JP S6426334 A JPS6426334 A JP S6426334A JP 62179035 A JP62179035 A JP 62179035A JP 17903587 A JP17903587 A JP 17903587A JP S6426334 A JPS6426334 A JP S6426334A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- terminating set
- feed
- stopped
- battery
- 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
Landscapes
- Optical Communication System (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
PURPOSE:To reduce the deterioration of a battery for backup feed by obstructing backup feed when the operation of a terminating set is stopped by the conscious interruption of a power supply. CONSTITUTION:A transmitter-receiver circuit 4 receives feed from a power circuit 7 through switches 6, 11. When the supply of DC voltage from the power circuit 7 is stopped by service interruption, etc., a first monitor circuit 5 changes over the switch 6. Consequently, the transmitter-receiver circuit 4 is supplied with electric power by a battery 8. When a terminating set does not have a backup feed function, a second monitor circuit 9 does not receive a signal from the terminating set on a receiving interface line continuously for the specified time or more, and a switch 10 is turned OFF through the AND circuit 11. Accordingly, feed from the battery 8 is stopped.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62179035A JPS6426334A (en) | 1987-07-20 | 1987-07-20 | Power supply system of net terminating set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62179035A JPS6426334A (en) | 1987-07-20 | 1987-07-20 | Power supply system of net terminating set |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6426334A true JPS6426334A (en) | 1989-01-27 |
Family
ID=16058977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62179035A Pending JPS6426334A (en) | 1987-07-20 | 1987-07-20 | Power supply system of net terminating set |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6426334A (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57121724A (en) * | 1981-01-20 | 1982-07-29 | Sanyo Electric Co Ltd | Service interruption resistance device of microcomputer |
JPS61109351A (en) * | 1984-11-02 | 1986-05-27 | Nippon Telegr & Teleph Corp <Ntt> | Subscriber optical transmission system |
JPS61188611A (en) * | 1985-02-18 | 1986-08-22 | Hitachi Ltd | Power source disconnection system of terminal control device |
JPS6249747A (en) * | 1985-08-29 | 1987-03-04 | Toshiba Corp | Power supply control device for communication system |
JPS62290328A (en) * | 1986-06-06 | 1987-12-17 | 株式会社東芝 | Battery backup circuit for communication equipment |
-
1987
- 1987-07-20 JP JP62179035A patent/JPS6426334A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57121724A (en) * | 1981-01-20 | 1982-07-29 | Sanyo Electric Co Ltd | Service interruption resistance device of microcomputer |
JPS61109351A (en) * | 1984-11-02 | 1986-05-27 | Nippon Telegr & Teleph Corp <Ntt> | Subscriber optical transmission system |
JPS61188611A (en) * | 1985-02-18 | 1986-08-22 | Hitachi Ltd | Power source disconnection system of terminal control device |
JPS6249747A (en) * | 1985-08-29 | 1987-03-04 | Toshiba Corp | Power supply control device for communication system |
JPS62290328A (en) * | 1986-06-06 | 1987-12-17 | 株式会社東芝 | Battery backup circuit for communication equipment |
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