NL26143C - - Google Patents

Info

Publication number
NL26143C
NL26143C NL26143DA NL26143C NL 26143 C NL26143 C NL 26143C NL 26143D A NL26143D A NL 26143DA NL 26143 C NL26143 C NL 26143C
Authority
NL
Netherlands
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 NL26143C publication Critical patent/NL26143C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/42—Circuits for by-passing of ringing 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
    • H04Q1/444—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)
  • Selective Calling Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Devices For Supply Of Signal Current (AREA)
NL26143D 1927-01-04 NL26143C (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE283135T 1927-01-04

Publications (1)

Publication Number Publication Date
NL26143C true NL26143C (xx)

Family

ID=31944976

Family Applications (2)

Application Number Title Priority Date Filing Date
NL39470D NL39470B (xx) 1927-01-04
NL26143D NL26143C (xx) 1927-01-04

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL39470D NL39470B (xx) 1927-01-04

Country Status (5)

Country Link
US (1) US1958166A (xx)
BE (1) BE347704A (xx)
DE (1) DE609601C (xx)
GB (1) GB283135A (xx)
NL (2) NL26143C (xx)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE742806C (de) * 1938-09-01 1943-12-11 Siemens Ag UEbertragungssystem mit Pegelregulierung durch eine Steuerfrequenz, bei dem das Ansprechen des Steuerfrequenzempfaengers auf die Nutzfrequenzen verhindert ist
DE745228C (de) * 1939-07-28 1944-03-01 Siemens Ag Elektrischer Signalempfaenger
BE454346A (xx) * 1943-03-08
FR996042A (fr) * 1945-04-14 1951-12-12 Perfectionnement aux signaleurs d'impulsions
BE478607A (xx) * 1945-12-20
FR928242A (fr) * 1946-05-18 1947-11-21 Materiel Telephonique Systèmes de signalisation électrique
US2511617A (en) * 1946-10-11 1950-06-13 Bell Telephone Laboroatories I Power line carrier frequency telephone system
NL69785C (xx) * 1947-02-21
DE841765C (de) * 1948-10-02 1952-06-19 Normalzeit G M B H Schaltungsanordnung fuer Fernsprechanlagen mit Tonfrequenzwahl
BE501904A (xx) * 1950-03-17
DE954519C (de) * 1951-12-13 1956-12-20 Standard Elek K Ag Schaltungsanordnung zum Empfang von Ruf- und Wahlzeichen
US2935731A (en) * 1957-02-26 1960-05-03 Richter Robert Selective signalling system

Also Published As

Publication number Publication date
NL39470B (xx)
GB283135A (xx) 1928-03-29
BE347704A (xx)
DE609601C (de) 1935-02-23
US1958166A (en) 1934-05-08

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