BE454346A - - Google Patents

Info

Publication number
BE454346A
BE454346A BE454346DA BE454346A BE 454346 A BE454346 A BE 454346A BE 454346D A BE454346D A BE 454346DA BE 454346 A BE454346 A BE 454346A
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 BE454346A publication Critical patent/BE454346A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/16—Arrangements for interconnection between switching centres in systems employing carrier frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals
    • 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)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Relay Systems (AREA)
BE454346D 1943-03-08 BE454346A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR895971T 1943-03-08

Publications (1)

Publication Number Publication Date
BE454346A true BE454346A (zh)

Family

ID=32947442

Family Applications (1)

Application Number Title Priority Date Filing Date
BE454346D BE454346A (zh) 1943-03-08

Country Status (5)

Country Link
US (1) US2468555A (zh)
BE (1) BE454346A (zh)
CH (1) CH256130A (zh)
DE (1) DE922775C (zh)
FR (1) FR895971A (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973493C (de) * 1950-09-28 1960-03-10 Philips Nv Einseitenbandtraegerfrequenzfernsprechsystem
NL92529C (zh) * 1952-04-09
NL201114A (zh) * 1955-10-10

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE347704A (zh) * 1927-01-04
US1748754A (en) * 1927-08-12 1930-02-25 Gen Electric Signaling system
US2117721A (en) * 1935-09-06 1938-05-17 Siemens Ag Telephone system
BE466622A (zh) * 1943-01-14

Also Published As

Publication number Publication date
DE922775C (de) 1955-01-24
CH256130A (fr) 1948-07-31
FR895971A (fr) 1945-02-08
US2468555A (en) 1949-04-26

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