SE227786C1 - - Google Patents
Info
- Publication number
- SE227786C1 SE227786C1 SE227786DA SE227786C1 SE 227786 C1 SE227786 C1 SE 227786C1 SE 227786D A SE227786D A SE 227786DA SE 227786 C1 SE227786 C1 SE 227786C1
- Authority
- SE
- Sweden
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
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- 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
- H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
- H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE227786T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE227786C1 true SE227786C1 (en:Method) | 1972-01-18 |
Family
ID=42004542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE227786D SE227786C1 (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE227786C1 (en:Method) |
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0
- SE SE227786D patent/SE227786C1/xx unknown