BE466622A - - Google Patents

Info

Publication number
BE466622A
BE466622A BE466622DA BE466622A BE 466622 A BE466622 A BE 466622A BE 466622D A BE466622D A BE 466622DA BE 466622 A BE466622 A BE 466622A
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 BE466622A publication Critical patent/BE466622A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/16—Monitoring arrangements
    • 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
    • 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)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
BE466622D 1943-01-14 BE466622A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB696/43A GB562870A (en) 1943-01-14 1943-01-14 Improvements in telephone or like systems

Publications (1)

Publication Number Publication Date
BE466622A true BE466622A (de)

Family

ID=9708927

Family Applications (1)

Application Number Title Priority Date Filing Date
BE466622D BE466622A (de) 1943-01-14

Country Status (4)

Country Link
US (1) US2380232A (de)
BE (1) BE466622A (de)
FR (1) FR930147A (de)
GB (1) GB562870A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE454346A (de) * 1943-03-08
FR952401A (fr) * 1943-04-22 1949-11-16 Telecommunications Sa Dispositif pour la transmission de signaux d'appel et de fin de conversation sur les circuits téléphoniques à longue distance
US2566700A (en) * 1946-10-30 1951-09-04 Rca Corp Stereoscopic and stereosonic television system
BE521897A (de) * 1952-08-03
US2972019A (en) * 1956-10-04 1961-02-14 Gen Dynamics Corp Automatic telephony ringing circuit
US3036163A (en) * 1959-05-15 1962-05-22 Bell Telephone Labor Inc Signaling system
US4517223A (en) * 1982-09-24 1985-05-14 Sovonics Solar Systems Method of making amorphous semiconductor alloys and devices using microwave energy

Also Published As

Publication number Publication date
US2380232A (en) 1945-07-10
GB562870A (en) 1944-07-19
FR930147A (fr) 1948-01-16

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