BE467333A - - Google Patents

Info

Publication number
BE467333A
BE467333A BE467333DA BE467333A BE 467333 A BE467333 A BE 467333A BE 467333D A BE467333D A BE 467333DA BE 467333 A BE467333 A BE 467333A
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 BE467333A publication Critical patent/BE467333A/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
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
    • H04Q1/4535—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted with an additional signal transmitted for voice protection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
BE467333D 1942-07-28 BE467333A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2376352X 1942-07-28

Publications (1)

Publication Number Publication Date
BE467333A true BE467333A (enrdf_load_stackoverflow)

Family

ID=10905151

Family Applications (1)

Application Number Title Priority Date Filing Date
BE467333D BE467333A (enrdf_load_stackoverflow) 1942-07-28

Country Status (2)

Country Link
US (1) US2376352A (enrdf_load_stackoverflow)
BE (1) BE467333A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB641888A (en) * 1947-02-07 1950-08-23 Standard Telephones Cables Ltd Improvements in or relating to electric signalling systems
US2607854A (en) * 1947-07-22 1952-08-19 Automatic Elect Lab Automatic toll telephone system
US2566009A (en) * 1947-12-12 1951-08-28 Automatic Elect Lab Interexchange switching telephone system

Also Published As

Publication number Publication date
US2376352A (en) 1945-05-22

Similar Documents

Publication Publication Date Title
FR869753A (enrdf_load_stackoverflow)
BE446396A (enrdf_load_stackoverflow)
BE445519A (enrdf_load_stackoverflow)
BE476887A (enrdf_load_stackoverflow)
BE458817A (enrdf_load_stackoverflow)
BE454431A (enrdf_load_stackoverflow)
BE446591A (enrdf_load_stackoverflow)
BE446560A (enrdf_load_stackoverflow)
BE446464A (enrdf_load_stackoverflow)
BE446455A (enrdf_load_stackoverflow)
BE446420A (enrdf_load_stackoverflow)
BE361247A (enrdf_load_stackoverflow)
BE406116A (enrdf_load_stackoverflow)
BE441168A (enrdf_load_stackoverflow)
BE441218A (enrdf_load_stackoverflow)
BE442959A (enrdf_load_stackoverflow)
BE443577A (enrdf_load_stackoverflow)
BE444337A (enrdf_load_stackoverflow)
BE444433A (enrdf_load_stackoverflow)
BE444539A (enrdf_load_stackoverflow)
BE467333A (enrdf_load_stackoverflow)
BE444779A (enrdf_load_stackoverflow)
BE444937A (enrdf_load_stackoverflow)
BE445013A (enrdf_load_stackoverflow)
BE445032A (enrdf_load_stackoverflow)