BE371832A - - Google Patents

Info

Publication number
BE371832A
BE371832A BE371832DA BE371832A BE 371832 A BE371832 A BE 371832A BE 371832D A BE371832D A BE 371832DA BE 371832 A BE371832 A BE 371832A
Authority
BE
Belgium
Prior art keywords
line
relay
telephone system
circuit
office
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE371832A publication Critical patent/BE371832A/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
BE371832D BE371832A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE371832A true BE371832A (enrdf_load_stackoverflow)

Family

ID=43049

Family Applications (1)

Application Number Title Priority Date Filing Date
BE371832D BE371832A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE371832A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
BE371832A (enrdf_load_stackoverflow)
BE384554A (enrdf_load_stackoverflow)
BE361645A (enrdf_load_stackoverflow)
CH106044A (fr) Installation téléphonique pour bureau privé annexe.
BE425916A (enrdf_load_stackoverflow)
BE371425A (enrdf_load_stackoverflow)
BE440777A (enrdf_load_stackoverflow)
BE388787A (enrdf_load_stackoverflow)
BE363268A (enrdf_load_stackoverflow)
BE352110A (enrdf_load_stackoverflow)
CH95589A (fr) Installation téléphonique d'intercommunication entre un bureau central automatique et un bureau privé annexe.
BE353818A (enrdf_load_stackoverflow)
BE409407A (enrdf_load_stackoverflow)
BE349935A (enrdf_load_stackoverflow)
CH126081A (fr) Installation téléphonique à commutateurs automatiques.
BE352429A (enrdf_load_stackoverflow)
BE483916A (enrdf_load_stackoverflow)
CH156615A (fr) Installation téléphonique à plusieurs bureaux.
BE377986A (enrdf_load_stackoverflow)
BE469922A (enrdf_load_stackoverflow)
BE429601A (enrdf_load_stackoverflow)
BE428323A (enrdf_load_stackoverflow)
CH125095A (fr) Procédé pour l'établissement de connexions entre des bureaux téléphoniques qui sont au moins en partie automatiques et installation téléphonique pour la mise en oeuvre de ce procédé.
BE340847A (enrdf_load_stackoverflow)
BE365774A (enrdf_load_stackoverflow)