BE353077A - - Google Patents

Info

Publication number
BE353077A
BE353077A BE353077DA BE353077A BE 353077 A BE353077 A BE 353077A BE 353077D A BE353077D A BE 353077DA BE 353077 A BE353077 A BE 353077A
Authority
BE
Belgium
Prior art keywords
telephone system
relay
operator
call
subscriber
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE353077A publication Critical patent/BE353077A/fr

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/60Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M5/00Manual exchanges
    • H04M5/10Manual exchanges using separate plug for each subscriber

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
BE353077D BE353077A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE353077A true BE353077A (enrdf_load_stackoverflow)

Family

ID=27727

Family Applications (1)

Application Number Title Priority Date Filing Date
BE353077D BE353077A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE353077A (enrdf_load_stackoverflow)

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