FR808517A - Enhancements to two-way repeater telephone transmission systems - Google Patents

Enhancements to two-way repeater telephone transmission systems

Info

Publication number
FR808517A
FR808517A FR808517DA FR808517A FR 808517 A FR808517 A FR 808517A FR 808517D A FR808517D A FR 808517DA FR 808517 A FR808517 A FR 808517A
Authority
FR
France
Prior art keywords
enhancements
transmission systems
telephone transmission
way repeater
repeater telephone
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR808517A publication Critical patent/FR808517A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/40—Applications of speech amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Amplifiers (AREA)
FR808517D 1935-11-05 1936-05-09 Enhancements to two-way repeater telephone transmission systems Expired FR808517A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3058735A GB465353A (en) 1935-11-05 1935-11-05 Improvements in or relating to relay switching arrangements for telephone or like transmission systems

Publications (1)

Publication Number Publication Date
FR808517A true FR808517A (en) 1937-02-09

Family

ID=10309963

Family Applications (1)

Application Number Title Priority Date Filing Date
FR808517D Expired FR808517A (en) 1935-11-05 1936-05-09 Enhancements to two-way repeater telephone transmission systems

Country Status (3)

Country Link
DE (1) DE701716C (en)
FR (1) FR808517A (en)
GB (2) GB456827A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885493A (en) * 1955-12-05 1959-05-05 Bell Telephone Labor Inc Echo suppressor circuits

Also Published As

Publication number Publication date
GB456827A (en) 1936-11-16
GB465353A (en) 1937-05-05
DE701716C (en) 1941-01-22

Similar Documents

Publication Publication Date Title
FR832232A (en) Improvements to television systems
FR843159A (en) Transmission systems
FR783829A (en) Improvements to submarine cable systems
FR786456A (en) Improvements to powerline transmission systems
FR818700A (en) Improvements to electrical transmission systems
FR808517A (en) Enhancements to two-way repeater telephone transmission systems
FR771800A (en) Improvements to telecommunication systems
FR45431E (en) Improvements to transmission systems
FR728614A (en) Improvements to telephone transmission systems
FR788023A (en) Improvements to television transmitting systems
FR785588A (en) Improvements to telecinematography transmitting systems
FR814686A (en) Improvements to telephone transmission systems
FR761926A (en) Improvements to telephone systems
FR809842A (en) Improvements to television transmission systems
FR812782A (en) Improvements to television transmission systems
FR752268A (en) Improvements to television systems
FR776655A (en) Improvements to television transmitting systems
FR812431A (en) Improvements to communication systems
FR819002A (en) Improvements to transmission systems
FR807654A (en) Improvements to telephone or similar systems
FR753279A (en) Improvements to automatic telephone systems
FR840029A (en) Telephone transmission systems
FR723779A (en) Improvements to transmission systems
FR840492A (en) Improvements to transmission systems
FR847567A (en) Improvements to electrical transmission systems