SE322817B - - Google Patents
Info
- Publication number
- SE322817B SE322817B SE3707/65A SE370765A SE322817B SE 322817 B SE322817 B SE 322817B SE 3707/65 A SE3707/65 A SE 3707/65A SE 370765 A SE370765 A SE 370765A SE 322817 B SE322817 B SE 322817B
- Authority
- SE
- Sweden
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of DC pulses
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- 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)
- Computer Networks & Wireless Communication (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE3707/65A SE322817B (en:Method) | 1965-03-23 | 1965-03-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE3707/65A SE322817B (en:Method) | 1965-03-23 | 1965-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE322817B true SE322817B (en:Method) | 1970-04-20 |
Family
ID=20262705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE3707/65A SE322817B (en:Method) | 1965-03-23 | 1965-03-23 |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE322817B (en:Method) |
-
1965
- 1965-03-23 SE SE3707/65A patent/SE322817B/xx unknown