FR2281027A1 - Recepteur de signalisation a frequence vocale - Google Patents

Recepteur de signalisation a frequence vocale

Info

Publication number
FR2281027A1
FR2281027A1 FR7523465A FR7523465A FR2281027A1 FR 2281027 A1 FR2281027 A1 FR 2281027A1 FR 7523465 A FR7523465 A FR 7523465A FR 7523465 A FR7523465 A FR 7523465A FR 2281027 A1 FR2281027 A1 FR 2281027A1
Authority
FR
France
Prior art keywords
voice frequency
frequency signaling
signaling receiver
receiver
voice
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.)
Granted
Application number
FR7523465A
Other languages
English (en)
French (fr)
Other versions
FR2281027B1 (index.php
Inventor
Wolf Ohl
Gunther Rahmig
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2281027A1 publication Critical patent/FR2281027A1/fr
Application granted granted Critical
Publication of FR2281027B1 publication Critical patent/FR2281027B1/fr
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)
FR7523465A 1974-08-01 1975-07-28 Recepteur de signalisation a frequence vocale Granted FR2281027A1 (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 (2)

Publication Number Publication Date
FR2281027A1 true FR2281027A1 (fr) 1976-02-27
FR2281027B1 FR2281027B1 (index.php) 1982-02-05

Family

ID=5922216

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7523465A Granted FR2281027A1 (fr) 1974-08-01 1975-07-28 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
FR2281027B1 (index.php) 1982-02-05
GB1505704A (en) 1978-03-30
BE832022A (fr) 1976-02-02
DE2437187A1 (de) 1976-02-12

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Legal Events

Date Code Title Description
ST Notification of lapse