SE7206522L - - Google Patents
Info
- Publication number
- SE7206522L SE7206522L SE7206522A SE7206522A SE7206522L SE 7206522 L SE7206522 L SE 7206522L SE 7206522 A SE7206522 A SE 7206522A SE 7206522 A SE7206522 A SE 7206522A SE 7206522 L SE7206522 L SE 7206522L
- 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
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7206522T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE7206522L true SE7206522L (en:Method) | 1972-12-04 |
Family
ID=43983134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7206522A SE7206522L (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE7206522L (en:Method) |
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0
- SE SE7206522A patent/SE7206522L/xx unknown