CH272114A - Ausrüstung zur Einführung einer Echosperre in eine Fernmeldeamtsverbindung. - Google Patents

Ausrüstung zur Einführung einer Echosperre in eine Fernmeldeamtsverbindung.

Info

Publication number
CH272114A
CH272114A CH272114DA CH272114A CH 272114 A CH272114 A CH 272114A CH 272114D A CH272114D A CH 272114DA CH 272114 A CH272114 A CH 272114A
Authority
CH
Switzerland
Prior art keywords
introducing
equipment
echo canceller
exchange connection
telecommunications exchange
Prior art date
Application number
Other languages
German (de)
English (en)
Inventor
Ag Standard Telephon Und Radio
Original Assignee
Standard Telephon & Radio 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 Telephon & Radio Ag filed Critical Standard Telephon & Radio Ag
Publication of CH272114A publication Critical patent/CH272114A/de

Links

Classifications

    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
CH272114D 1947-04-29 1948-04-13 Ausrüstung zur Einführung einer Echosperre in eine Fernmeldeamtsverbindung. CH272114A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB272114X 1947-04-29

Publications (1)

Publication Number Publication Date
CH272114A true CH272114A (de) 1950-11-30

Family

ID=10255966

Family Applications (1)

Application Number Title Priority Date Filing Date
CH272114D CH272114A (de) 1947-04-29 1948-04-13 Ausrüstung zur Einführung einer Echosperre in eine Fernmeldeamtsverbindung.

Country Status (3)

Country Link
US (1) US2653999A (en, 2012)
CH (1) CH272114A (en, 2012)
FR (1) FR965561A (en, 2012)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017695A (en) * 1974-09-30 1977-04-12 Bell Telephone Laboratories, Incorporated Customer operated gain control circuit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1560544A (en) * 1923-10-25 1925-11-10 American Telephone & Telegraph Testing circuits for echo suppressors
US2025145A (en) * 1929-10-04 1935-12-24 American Telephone & Telegraph Transmission system
US1855779A (en) * 1930-07-21 1932-04-26 Associated Electric Lab Inc Telephone system
US2294237A (en) * 1940-06-05 1942-08-25 Bell Telephone Labor Inc Telephone circuit
US2355958A (en) * 1942-09-17 1944-08-15 Bell Telephone Labor Inc Control of two-way signal transmission systems

Also Published As

Publication number Publication date
FR965561A (en, 2012) 1950-09-15
US2653999A (en) 1953-09-29

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