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FR858526A - Mounting device, for teletransmission installations, in which signals are transmitted by alternating currents of a determined frequency - Google Patents

Mounting device, for teletransmission installations, in which signals are transmitted by alternating currents of a determined frequency

Info

Publication number
FR858526A
FR858526A FR858526DA FR858526A FR 858526 A FR858526 A FR 858526A FR 858526D A FR858526D A FR 858526DA FR 858526 A FR858526 A FR 858526A
Authority
FR
France
Prior art keywords
teletransmission
installations
signals
transmitted
mounting device
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
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 FR858526A publication Critical patent/FR858526A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
FR858526D 1938-08-03 1939-07-31 Mounting device, for teletransmission installations, in which signals are transmitted by alternating currents of a determined frequency Expired FR858526A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL95329A DE707378C (en) 1938-08-03 1938-08-03 Circuit arrangement for telemedicine systems in which the signals are given by alternating currents of a specific frequency sequence

Publications (1)

Publication Number Publication Date
FR858526A true FR858526A (en) 1940-11-27

Family

ID=27797495

Family Applications (1)

Application Number Title Priority Date Filing Date
FR858526D Expired FR858526A (en) 1938-08-03 1939-07-31 Mounting device, for teletransmission installations, in which signals are transmitted by alternating currents of a determined frequency

Country Status (6)

Country Link
US (1) US2208928A (en)
BE (1) BE435741A (en)
CH (1) CH212535A (en)
DE (1) DE707378C (en)
FR (1) FR858526A (en)
NL (1) NL56885C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE960737C (en) * 1951-02-24 1957-04-18 Siemens Ag Circuit arrangement for telephone systems in which alternating currents are used for signaling within the voice band
US5528682A (en) * 1995-01-30 1996-06-18 Harris Corporation Double duty capacitor circuit and method

Also Published As

Publication number Publication date
DE707378C (en) 1941-06-20
NL56885C (en)
BE435741A (en)
US2208928A (en) 1940-07-23
CH212535A (en) 1940-11-30

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