JPH0310275B2 - - Google Patents
Info
- Publication number
- JPH0310275B2 JPH0310275B2 JP59082164A JP8216484A JPH0310275B2 JP H0310275 B2 JPH0310275 B2 JP H0310275B2 JP 59082164 A JP59082164 A JP 59082164A JP 8216484 A JP8216484 A JP 8216484A JP H0310275 B2 JPH0310275 B2 JP H0310275B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- call
- office line
- turns
- central office
- 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
- 238000001514 detection method Methods 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
- H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59082164A JPS60226296A (ja) | 1984-04-24 | 1984-04-24 | ボタン電話装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59082164A JPS60226296A (ja) | 1984-04-24 | 1984-04-24 | ボタン電話装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60226296A JPS60226296A (ja) | 1985-11-11 |
| JPH0310275B2 true JPH0310275B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-02-13 |
Family
ID=13766786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59082164A Granted JPS60226296A (ja) | 1984-04-24 | 1984-04-24 | ボタン電話装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60226296A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0468649A (ja) * | 1990-07-10 | 1992-03-04 | American Teleph & Telegr Co <Att> | ファクシミリ装置 |
-
1984
- 1984-04-24 JP JP59082164A patent/JPS60226296A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60226296A (ja) | 1985-11-11 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |