BE466455A - - Google Patents

Info

Publication number
BE466455A
BE466455A BE466455DA BE466455A BE 466455 A BE466455 A BE 466455A BE 466455D A BE466455D A BE 466455DA BE 466455 A BE466455 A BE 466455A
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 BE466455A publication Critical patent/BE466455A/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
    • H04Q1/444—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)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interface Circuits In Exchanges (AREA)
BE466455D 1942-04-28 BE466455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5664/42A GB557013A (en) 1942-04-28 1942-04-28 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
BE466455A true BE466455A (en)

Family

ID=9800312

Family Applications (1)

Application Number Title Priority Date Filing Date
BE466455D BE466455A (en) 1942-04-28

Country Status (3)

Country Link
US (1) US2364685A (en)
BE (1) BE466455A (en)
GB (1) GB557013A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060275A (en) * 1958-11-07 1962-10-23 Bell Telephone Labor Inc Telephone system signaling
NL252835A (en) * 1959-06-23
US3103558A (en) * 1959-09-24 1963-09-10 Int Standard Electric Corp ligotky
US3201524A (en) * 1961-03-27 1965-08-17 Itt Multi-frequency tone signaling system
US3436487A (en) * 1965-09-14 1969-04-01 Bell Telephone Labor Inc Telephone signaling arrangement
DE1280280B (en) * 1966-06-29 1968-10-17 Siemens Ag Method and circuit arrangement for the mutual transmission of pulse-coded messages between subscriber stations via a voice channel
US4726095A (en) * 1986-07-17 1988-02-23 Bissell Jr Norman L Bucket fish scaler

Also Published As

Publication number Publication date
US2364685A (en) 1944-12-12
GB557013A (en) 1943-11-01

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