JPH0236251U - - Google Patents
Info
- Publication number
- JPH0236251U JPH0236251U JP1988113507U JP11350788U JPH0236251U JP H0236251 U JPH0236251 U JP H0236251U JP 1988113507 U JP1988113507 U JP 1988113507U JP 11350788 U JP11350788 U JP 11350788U JP H0236251 U JPH0236251 U JP H0236251U
- Authority
- JP
- Japan
- Prior art keywords
- line
- current
- monitoring
- circuit
- terminal
- 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
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000012806 monitoring device Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 101710112083 Para-Rep C1 Proteins 0.000 description 1
- 102100022881 Rab proteins geranylgeranyltransferase component A 1 Human genes 0.000 description 1
- 101710119887 Trans-acting factor B Proteins 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Monitoring And Testing Of Exchanges (AREA)
- Dc Digital Transmission (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
Description
第１図はこの考案の一実施例を示す回路図、第
２図は第１図に用いている直流重畳装置の一例を
示す回路図である。
１……直流重畳装置、１ａ……定電流回路部、
１ｂ……断線監視回路部、３……電池、４，Ｃ１
……コンデンサ、ＲＥＰ１……変成器、Ｓ１……
スイツチ。
FIG. 1 is a circuit diagram showing an embodiment of this invention, and FIG. 2 is a circuit diagram showing an example of the DC superimposition device used in FIG. 1. 1...DC superimposition device, 1a...constant current circuit section,
1b...Disconnection monitoring circuit section, 3...Battery, 4, C1
...Capacitor, REP1...Transformer, S1...
Switch.
Claims (1)
回線の接続状態を監視するための回線監視装置に
おいて、 交換機側線路を直流的に遮断する直流遮断回路
と、 端末側線路の一方に電流を供給する電流供給回
路と、 その電流の通電状態を端末側線路の他方におい
て監視する電流監視回路とを備えたことを特徴と
する回線監視装置。[Scope of Claim for Utility Model Registration] A line monitoring device for monitoring the connection status of a line connected to a terminal device having a transformer on the input side, comprising: a DC cutoff circuit that cuts off the line on the exchange side in a DC manner; and a terminal. A line monitoring device comprising: a current supply circuit that supplies current to one side line; and a current monitoring circuit that monitors the energization state of the current on the other side line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988113507U JPH0236251U (en) | 1988-08-31 | 1988-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988113507U JPH0236251U (en) | 1988-08-31 | 1988-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0236251U true JPH0236251U (en) | 1990-03-08 |
Family
ID=31353406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988113507U Pending JPH0236251U (en) | 1988-08-31 | 1988-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0236251U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0964973A (en) * | 1995-08-28 | 1997-03-07 | Nec Corp | Lan communication equipment |
| JP2012507937A (en) * | 2008-11-03 | 2012-03-29 | ザーリンク セミコンダクタ （ユー．エス．） インコーポレーテッド | Method and apparatus for metal line testing of subscriber lines |
-
1988
- 1988-08-31 JP JP1988113507U patent/JPH0236251U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0964973A (en) * | 1995-08-28 | 1997-03-07 | Nec Corp | Lan communication equipment |
| JP2012507937A (en) * | 2008-11-03 | 2012-03-29 | ザーリンク セミコンダクタ （ユー．エス．） インコーポレーテッド | Method and apparatus for metal line testing of subscriber lines |
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