BE477040A - - Google Patents

Info

Publication number
BE477040A
BE477040A BE477040DA BE477040A BE 477040 A BE477040 A BE 477040A BE 477040D A BE477040D A BE 477040DA BE 477040 A BE477040 A BE 477040A
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 BE477040A publication Critical patent/BE477040A/xx

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
    • H04Q1/442—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
BE477040D 1946-11-01 BE477040A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US707100A US2491263A (en) 1946-11-01 1946-11-01 Ringing system for voice current repeaters

Publications (1)

Publication Number Publication Date
BE477040A true BE477040A (enrdf_load_html_response)

Family

ID=24840350

Family Applications (1)

Application Number Title Priority Date Filing Date
BE477040D BE477040A (enrdf_load_html_response) 1946-11-01

Country Status (2)

Country Link
US (1) US2491263A (enrdf_load_html_response)
BE (1) BE477040A (enrdf_load_html_response)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554828A (en) * 1947-07-07 1951-05-29 Bell Telephone Labor Inc Testing repeaters in transmission systems by shunting out individual repeaters
US2644044A (en) * 1949-05-28 1953-06-30 Automatic Elect Lab Voice current repeater
US2872518A (en) * 1951-11-23 1959-02-03 Gen Dynamics Corp Party line telephone system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1697933A (en) * 1926-10-26 1929-01-08 American Telephone & Telegraph Signaling circuits for repeaters
US1829803A (en) * 1930-08-04 1931-11-03 Bell Telephone Labor Inc Telephone system
BE465290A (enrdf_load_html_response) * 1945-04-30

Also Published As

Publication number Publication date
US2491263A (en) 1949-12-13

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