CH113647A - Installation for the interconnection of telephone circuits containing devices for suppressing echoes. - Google Patents

Installation for the interconnection of telephone circuits containing devices for suppressing echoes.

Info

Publication number
CH113647A
CH113647A CH113647DA CH113647A CH 113647 A CH113647 A CH 113647A CH 113647D A CH113647D A CH 113647DA CH 113647 A CH113647 A CH 113647A
Authority
CH
Switzerland
Prior art keywords
interconnection
installation
circuits containing
containing devices
telephone circuits
Prior art date
Application number
Other languages
French (fr)
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 CH113647A publication Critical patent/CH113647A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/10—Control of transmission; Equalising by pilot signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
CH113647D 1924-11-13 1925-01-26 Installation for the interconnection of telephone circuits containing devices for suppressing echoes. CH113647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27117/24A GB245554A (en) 1924-11-13 1924-11-13 Improvements in or relating to telephone repeater circuits

Publications (1)

Publication Number Publication Date
CH113647A true CH113647A (en) 1926-02-16

Family

ID=10254473

Family Applications (1)

Application Number Title Priority Date Filing Date
CH113647D CH113647A (en) 1924-11-13 1925-01-26 Installation for the interconnection of telephone circuits containing devices for suppressing echoes.

Country Status (6)

Country Link
US (2) US1545558A (en)
CH (1) CH113647A (en)
DE (1) DE474670C (en)
FR (1) FR596065A (en)
GB (1) GB245554A (en)
NL (1) NL15798C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990457A (en) * 1958-02-04 1961-06-27 Bell Telephone Labor Inc Tandem echo suppressor circuits

Also Published As

Publication number Publication date
GB245554A (en) 1926-01-14
FR596065A (en) 1925-10-15
DE474670C (en) 1929-04-12
US1545558A (en) 1925-07-14
US1545541A (en) 1925-07-14
NL15798C (en) 1927-01-15

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