BE493860A - - Google Patents

Info

Publication number
BE493860A
BE493860A BE493860DA BE493860A BE 493860 A BE493860 A BE 493860A BE 493860D A BE493860D A BE 493860DA BE 493860 A BE493860 A BE 493860A
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 BE493860A publication Critical patent/BE493860A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication
    • 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
    • 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
    • H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
    • H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
BE493860D 1949-02-16 BE493860A (xx)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE279121X 1949-02-16
DE250749X 1949-07-25

Publications (1)

Publication Number Publication Date
BE493860A true BE493860A (xx)

Family

ID=25768521

Family Applications (1)

Application Number Title Priority Date Filing Date
BE493860D BE493860A (xx) 1949-02-16

Country Status (4)

Country Link
US (1) US2988600A (xx)
BE (1) BE493860A (xx)
CH (1) CH279121A (xx)
GB (1) GB704749A (xx)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1723153A (en) * 1928-06-20 1929-08-06 American Telephone & Telegraph Telephone system
US1834393A (en) * 1930-02-12 1931-12-01 Bell Telephone Labor Inc Telephone exchange system
GB475419A (en) * 1936-05-18 1937-11-18 Automatic Electric Co Ltd Improvements in or relating to telephone systems
US2282911A (en) * 1938-04-12 1942-05-12 Fides Ges Fur Die Verwaltung A Telephone system

Also Published As

Publication number Publication date
US2988600A (en) 1961-06-13
GB704749A (en) 1954-03-03
CH279121A (de) 1951-11-15

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