BE476370A - Systèmes de télécommunications - Google Patents

Systèmes de télécommunications

Info

Publication number
BE476370A
BE476370A BE476370A BE476370A BE476370A BE 476370 A BE476370 A BE 476370A BE 476370 A BE476370 A BE 476370A BE 476370 A BE476370 A BE 476370A BE 476370 A BE476370 A BE 476370A
Authority
BE
Belgium
Prior art keywords
relay
circuit
signal
contact
work
Prior art date
Application number
BE476370A
Other languages
English (en)
French (fr)
Original Assignee
Bell Telephone Manf Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bell Telephone Manf Co filed Critical Bell Telephone Manf Co
Publication of BE476370A publication Critical patent/BE476370A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
BE476370A 1946-01-16 1947-09-29 Systèmes de télécommunications BE476370A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1496/46A GB606596A (en) 1946-01-16 1946-01-16 Improvements in or relating to telecommunication exchange systems

Publications (1)

Publication Number Publication Date
BE476370A true BE476370A (fr) 1948-03-29

Family

ID=27799321

Family Applications (1)

Application Number Title Priority Date Filing Date
BE476370A BE476370A (fr) 1946-01-16 1947-09-29 Systèmes de télécommunications

Country Status (4)

Country Link
BE (1) BE476370A (de)
CH (1) CH269352A (de)
FR (1) FR943692A (de)
GB (1) GB606596A (de)

Also Published As

Publication number Publication date
GB606596A (en) 1948-08-17
FR943692A (fr) 1949-03-15
CH269352A (de) 1950-06-30

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