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
Application number
Other languages
English (en)
French (fr)
Publication of BE399745A publication Critical patent/BE399745A/fr

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/66Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/677Preventing 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)
BE399745D BE399745A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE399745A true BE399745A (enrdf_load_stackoverflow)

Family

ID=66002

Family Applications (1)

Application Number Title Priority Date Filing Date
BE399745D BE399745A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE399745A (enrdf_load_stackoverflow)

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