FR868421A - Montage pour appel sélectif à audio-fréquence - Google Patents

Montage pour appel sélectif à audio-fréquence

Info

Publication number
FR868421A
FR868421A FR868421DA FR868421A FR 868421 A FR868421 A FR 868421A FR 868421D A FR868421D A FR 868421DA FR 868421 A FR868421 A FR 868421A
Authority
FR
France
Prior art keywords
audio
frequency selective
selective calling
calling assembly
assembly
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Other languages
English (en)
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
C Lorenz AG
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.)
Filing date
Publication date
Application filed by Standard Elektrik Lorenz AG, C Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of FR868421A publication Critical patent/FR868421A/fr
Expired legal-status Critical Current

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)
  • Mobile Radio Communication Systems (AREA)
FR868421D 1938-12-01 1940-12-27 Montage pour appel sélectif à audio-fréquence Expired FR868421A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1938L0096432 DE703506C (de) 1938-12-01 1938-12-01 Schaltung fuer selektiven Tonfrequenzruf

Publications (1)

Publication Number Publication Date
FR868421A true FR868421A (fr) 1941-12-30

Family

ID=27797496

Family Applications (1)

Application Number Title Priority Date Filing Date
FR868421D Expired FR868421A (fr) 1938-12-01 1940-12-27 Montage pour appel sélectif à audio-fréquence

Country Status (4)

Country Link
BE (1) BE436739A (enrdf_load_stackoverflow)
DE (1) DE703506C (enrdf_load_stackoverflow)
FR (1) FR868421A (enrdf_load_stackoverflow)
NL (1) NL60537C (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE954519C (de) * 1951-12-13 1956-12-20 Standard Elek K Ag Schaltungsanordnung zum Empfang von Ruf- und Wahlzeichen
DE1161593C2 (de) * 1961-06-02 1974-06-20 Felten & Guilleaume Gmbh Schaltungsanordnung fuer Rufumsetzer mit UEbergang von zweidraehtiger auf vierdraehtige Niederfrequenzverbindung
CH665738A5 (de) * 1984-09-11 1988-05-31 Siemens Ag Albis Gabelschaltung.

Also Published As

Publication number Publication date
DE703506C (de) 1941-03-11
NL60537C (enrdf_load_stackoverflow)
BE436739A (enrdf_load_stackoverflow)

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