BE371806A - - Google Patents

Info

Publication number
BE371806A
BE371806A BE371806DA BE371806A BE 371806 A BE371806 A BE 371806A BE 371806D A BE371806D A BE 371806DA BE 371806 A BE371806 A BE 371806A
Authority
BE
Belgium
Prior art keywords
relay
selector
energized
circuit
offices
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE371806A publication Critical patent/BE371806A/fr

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/58Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
BE371806D BE371806A (ja�@�@)

Publications (1)

Publication Number Publication Date
BE371806A true BE371806A (ja�@�@)

Family

ID=43026

Family Applications (1)

Application Number Title Priority Date Filing Date
BE371806D BE371806A (ja�@�@)

Country Status (1)

Country Link
BE (1) BE371806A (ja�@�@)

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