FR85566E - Voice frequency receiver - Google Patents

Voice frequency receiver

Info

Publication number
FR85566E
FR85566E FR969691A FR969691A FR85566E FR 85566 E FR85566 E FR 85566E FR 969691 A FR969691 A FR 969691A FR 969691 A FR969691 A FR 969691A FR 85566 E FR85566 E FR 85566E
Authority
FR
France
Prior art keywords
frequency receiver
voice frequency
voice
receiver
frequency
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
FR969691A
Other languages
French (fr)
Inventor
Ernst Beyerle
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
Priority claimed from DEST20480A external-priority patent/DE1214276B/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to FR969691A priority Critical patent/FR85566E/en
Application granted granted Critical
Publication of FR85566E publication Critical patent/FR85566E/en
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
    • H04Q1/45—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
    • 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
    • H04Q1/45—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
    • 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
    • H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR969691A 1963-04-06 1964-04-03 Voice frequency receiver Expired FR85566E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR969691A FR85566E (en) 1963-04-06 1964-04-03 Voice frequency receiver

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEST20480A DE1214276B (en) 1963-04-06 1963-04-06 Circuit arrangement for evaluating combination signals
DEST21410A DE1203319B (en) 1963-04-06 1963-12-04 Circuit arrangement for the dial recording devices of a telephone exchange
FR969691A FR85566E (en) 1963-04-06 1964-04-03 Voice frequency receiver

Publications (1)

Publication Number Publication Date
FR85566E true FR85566E (en) 1965-09-03

Family

ID=27212471

Family Applications (1)

Application Number Title Priority Date Filing Date
FR969691A Expired FR85566E (en) 1963-04-06 1964-04-03 Voice frequency receiver

Country Status (1)

Country Link
FR (1) FR85566E (en)

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