CH150480A - Two-way telephone system with echo blocking devices. - Google Patents

Two-way telephone system with echo blocking devices.

Info

Publication number
CH150480A
CH150480A CH150480DA CH150480A CH 150480 A CH150480 A CH 150480A CH 150480D A CH150480D A CH 150480DA CH 150480 A CH150480 A CH 150480A
Authority
CH
Switzerland
Prior art keywords
telephone system
blocking devices
way telephone
echo blocking
echo
Prior art date
Application number
Other languages
German (de)
Inventor
Co Bell Telephon Manufacturing
Original Assignee
Bell Telephone Mfg
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 Bell Telephone Mfg filed Critical Bell Telephone Mfg
Publication of CH150480A publication Critical patent/CH150480A/en

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)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Optical Communication System (AREA)
  • Interface Circuits In Exchanges (AREA)
CH150480D 1929-09-05 1930-05-24 Two-way telephone system with echo blocking devices. CH150480A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US390540A US1826196A (en) 1929-09-05 1929-09-05 Echo suppressor
US483784A US1840015A (en) 1929-09-05 1930-09-23 Transmission control circuit

Publications (1)

Publication Number Publication Date
CH150480A true CH150480A (en) 1931-10-31

Family

ID=42041884

Family Applications (1)

Application Number Title Priority Date Filing Date
CH150480D CH150480A (en) 1929-09-05 1930-05-24 Two-way telephone system with echo blocking devices.

Country Status (6)

Country Link
US (2) US1826196A (en)
BE (1) BE373794A (en)
CH (1) CH150480A (en)
DE (3) DE595881C (en)
FR (1) FR716100A (en)
GB (2) GB351070A (en)

Also Published As

Publication number Publication date
FR716100A (en) 1931-12-12
DE596742C (en) 1934-05-11
GB354790A (en) 1931-08-14
US1826196A (en) 1931-10-06
DE596743C (en) 1934-05-11
US1840015A (en) 1932-01-05
BE373794A (en) 1930-10-31
DE595881C (en) 1934-04-23
GB351070A (en) 1931-06-22

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