BE519001A - - Google Patents

Info

Publication number
BE519001A
BE519001A BE519001DA BE519001A BE 519001 A BE519001 A BE 519001A BE 519001D A BE519001D A BE 519001DA BE 519001 A BE519001 A BE 519001A
Authority
BE
Belgium
Application number
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.)
Publication of BE519001A publication Critical patent/BE519001A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • 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)
  • Telephonic Communication Services (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
BE519001D 1952-04-08 BE519001A ( )

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE314513X 1952-04-08

Publications (1)

Publication Number Publication Date
BE519001A true BE519001A ( )

Family

ID=6146321

Family Applications (1)

Application Number Title Priority Date Filing Date
BE519001D BE519001A ( ) 1952-04-08

Country Status (5)

Country Link
US (1) US2734101A ( )
BE (1) BE519001A ( )
CH (1) CH314513A ( )
FR (1) FR1085035A ( )
GB (1) GB747563A ( )

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1857833A (en) * 1928-12-20 1932-05-10 Int Standard Electric Corp Automatic or semiautomatic telephone system
FR961407A ( ) * 1937-04-30 1950-05-11
GB655974A (en) * 1946-11-14 1951-08-08 Claesson Harry Elias Automatic switching arrangement
US2580069A (en) * 1949-07-08 1951-12-25 Bell Telephone Labor Inc Dial pulse receiving circuit

Also Published As

Publication number Publication date
FR1085035A (fr) 1955-01-26
GB747563A (en) 1956-04-11
CH314513A (de) 1956-06-15
US2734101A (en) 1956-02-07

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