BE399745A - - Google Patents
Info
- Publication number
- BE399745A BE399745A BE399745DA BE399745A BE 399745 A BE399745 A BE 399745A BE 399745D A BE399745D A BE 399745DA BE 399745 A BE399745 A BE 399745A
- Authority
- BE
- Belgium
- Prior art keywords
- circuit
- disc
- call
- fact
- telephone
- Prior art date
Links
- 230000006872 improvement Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000003313 weakening effect Effects 0.000 claims description 2
- 206010052428 Wound Diseases 0.000 claims 1
- 208000027418 Wounds and injury Diseases 0.000 claims 1
- 238000004804 winding Methods 0.000 description 15
- 230000004075 alteration Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 206010051602 Laziness Diseases 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 241000470001 Delaya Species 0.000 description 1
- 241001125929 Trisopterus luscus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
- H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE399745A true BE399745A (en:Method) |
Family
ID=66002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE399745D BE399745A (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE399745A (en:Method) |
-
0
- BE BE399745D patent/BE399745A/fr unknown
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