BE832022A - Recepteur de signalisation a frequence vocale - Google Patents

Recepteur de signalisation a frequence vocale

Info

Publication number
BE832022A
BE832022A BE2054494A BE2054494A BE832022A BE 832022 A BE832022 A BE 832022A BE 2054494 A BE2054494 A BE 2054494A BE 2054494 A BE2054494 A BE 2054494A BE 832022 A BE832022 A BE 832022A
Authority
BE
Belgium
Prior art keywords
voice frequency
frequency signaling
signaling receiver
receiver
voice
Prior art date
Application number
BE2054494A
Other languages
English (en)
French (fr)
Inventor
W Ohl
G Rahmig
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 filed Critical
Publication of BE832022A publication Critical patent/BE832022A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)
BE2054494A 1974-08-01 1975-08-01 Recepteur de signalisation a frequence vocale BE832022A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742437187 DE2437187A1 (de) 1974-08-01 1974-08-01 Schaltungsanordnung fuer einen signalempfaenger

Publications (1)

Publication Number Publication Date
BE832022A true BE832022A (fr) 1976-02-02

Family

ID=5922216

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2054494A BE832022A (fr) 1974-08-01 1975-08-01 Recepteur de signalisation a frequence vocale

Country Status (4)

Country Link
BE (1) BE832022A (index.php)
DE (1) DE2437187A1 (index.php)
FR (1) FR2281027A1 (index.php)
GB (1) GB1505704A (index.php)

Also Published As

Publication number Publication date
FR2281027A1 (fr) 1976-02-27
FR2281027B1 (index.php) 1982-02-05
GB1505704A (en) 1978-03-30
DE2437187A1 (de) 1976-02-12

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