JPS5413323B2 - - Google Patents
Info
- Publication number
- JPS5413323B2 JPS5413323B2 JP5915275A JP5915275A JPS5413323B2 JP S5413323 B2 JPS5413323 B2 JP S5413323B2 JP 5915275 A JP5915275 A JP 5915275A JP 5915275 A JP5915275 A JP 5915275A JP S5413323 B2 JPS5413323 B2 JP S5413323B2
- Authority
- JP
- Japan
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5915275A JPS51134506A (en) | 1975-05-16 | 1975-05-16 | Subscriber's circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5915275A JPS51134506A (en) | 1975-05-16 | 1975-05-16 | Subscriber's circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS51134506A JPS51134506A (en) | 1976-11-22 |
| JPS5413323B2 true JPS5413323B2 (OSRAM) | 1979-05-30 |
Family
ID=13105079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5915275A Granted JPS51134506A (en) | 1975-05-16 | 1975-05-16 | Subscriber's circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS51134506A (OSRAM) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4087646A (en) * | 1977-01-28 | 1978-05-02 | Bell Telephone Laboratories, Incorporated | Dual mode telephone subscriber loop current detector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL267227A (OSRAM) * | 1960-07-21 | |||
| US3838223A (en) * | 1973-10-01 | 1974-09-24 | Gte Automatic Electric Lab Inc | Ring trip and dial pulse detection circuit |
-
1975
- 1975-05-16 JP JP5915275A patent/JPS51134506A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS51134506A (en) | 1976-11-22 |