FR729462A - Further training in ultratelephonic telegraphy transmission systems - Google Patents

Further training in ultratelephonic telegraphy transmission systems

Info

Publication number
FR729462A
FR729462A FR729462DA FR729462A FR 729462 A FR729462 A FR 729462A FR 729462D A FR729462D A FR 729462DA FR 729462 A FR729462 A FR 729462A
Authority
FR
France
Prior art keywords
ultratelephonic
transmission systems
further training
telegraphy
telegraphy transmission
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.)
Lignes Telegraphiques et Telephoniques LTT SA
Original Assignee
Lignes Telegraphiques et Telephoniques LTT SA
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 Lignes Telegraphiques et Telephoniques LTT SA filed Critical Lignes Telegraphiques et Telephoniques LTT SA
Application granted granted Critical
Publication of FR729462A publication Critical patent/FR729462A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Amplifiers (AREA)
FR729462D 1931-03-14 1931-03-14 Further training in ultratelephonic telegraphy transmission systems Expired FR729462A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR569033X 1931-03-14

Publications (1)

Publication Number Publication Date
FR729462A true FR729462A (en) 1932-07-25

Family

ID=8948887

Family Applications (2)

Application Number Title Priority Date Filing Date
FR729462D Expired FR729462A (en) 1931-03-14 1931-03-14 Further training in ultratelephonic telegraphy transmission systems
FR713555D Expired FR713555A (en) 1931-03-14 1931-03-19 Submarine cable system

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR713555D Expired FR713555A (en) 1931-03-14 1931-03-19 Submarine cable system

Country Status (3)

Country Link
DE (1) DE569033C (en)
FR (2) FR729462A (en)
GB (1) GB384849A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1280280B (en) * 1966-06-29 1968-10-17 Siemens Ag Method and circuit arrangement for the mutual transmission of pulse-coded messages between subscriber stations via a voice channel

Also Published As

Publication number Publication date
DE569033C (en) 1933-01-27
GB384849A (en) 1932-12-15
FR713555A (en) 1931-11-06

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