BE351988A - - Google Patents
Info
- Publication number
- BE351988A BE351988A BE351988DA BE351988A BE 351988 A BE351988 A BE 351988A BE 351988D A BE351988D A BE 351988DA BE 351988 A BE351988 A BE 351988A
- Authority
- BE
- Belgium
- Prior art keywords
- line
- selection
- switch
- alternating current
- short
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE351988A true BE351988A (enEXAMPLES) |
Family
ID=26825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE351988D BE351988A (enEXAMPLES) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE351988A (enEXAMPLES) |
-
0
- BE BE351988D patent/BE351988A/fr unknown
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