JPS6121888Y2 - - Google Patents
Info
- Publication number
- JPS6121888Y2 JPS6121888Y2 JP7467880U JP7467880U JPS6121888Y2 JP S6121888 Y2 JPS6121888 Y2 JP S6121888Y2 JP 7467880 U JP7467880 U JP 7467880U JP 7467880 U JP7467880 U JP 7467880U JP S6121888 Y2 JPS6121888 Y2 JP S6121888Y2
- Authority
- JP
- Japan
- Prior art keywords
- relay
- line
- contact
- circuit
- telephone
- 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.)
- Expired
Links
- 238000004804 winding Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 10
- 238000011084 recovery Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Landscapes
- Monitoring And Testing Of Exchanges (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7467880U JPS6121888Y2 (ko) | 1980-05-30 | 1980-05-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7467880U JPS6121888Y2 (ko) | 1980-05-30 | 1980-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56176563U JPS56176563U (ko) | 1981-12-26 |
| JPS6121888Y2 true JPS6121888Y2 (ko) | 1986-07-01 |
Family
ID=29437379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7467880U Expired JPS6121888Y2 (ko) | 1980-05-30 | 1980-05-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6121888Y2 (ko) |
-
1980
- 1980-05-30 JP JP7467880U patent/JPS6121888Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56176563U (ko) | 1981-12-26 |
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