GB1018942A - Echo suppressors in transmission systems - Google Patents

Echo suppressors in transmission systems

Info

Publication number
GB1018942A
GB1018942A GB48333/62A GB4833362A GB1018942A GB 1018942 A GB1018942 A GB 1018942A GB 48333/62 A GB48333/62 A GB 48333/62A GB 4833362 A GB4833362 A GB 4833362A GB 1018942 A GB1018942 A GB 1018942A
Authority
GB
United Kingdom
Prior art keywords
relays
comparator
circuit
relay
subscriber
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
GB48333/62A
Other languages
English (en)
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1018942A publication Critical patent/GB1018942A/en
Expired legal-status Critical Current

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)
  • Interface Circuits In Exchanges (AREA)
GB48333/62A 1961-12-29 1962-12-21 Echo suppressors in transmission systems Expired GB1018942A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US163183A US3214526A (en) 1961-12-29 1961-12-29 Echo suppressor with improved break-in

Publications (1)

Publication Number Publication Date
GB1018942A true GB1018942A (en) 1966-02-02

Family

ID=22588836

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48333/62A Expired GB1018942A (en) 1961-12-29 1962-12-21 Echo suppressors in transmission systems

Country Status (5)

Country Link
US (1) US3214526A (en:Method)
BE (1) BE626673A (en:Method)
DE (1) DE1163393B (en:Method)
GB (1) GB1018942A (en:Method)
SE (1) SE218563C1 (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3275759A (en) * 1963-04-15 1966-09-27 Bell Telephone Labor Inc Break-in arrangement with compensation for variations in the trans-hybrid loss for echo suppressors
US5212722A (en) * 1989-07-24 1993-05-18 Nec Corporation Hands-free telephone having a handset volume attenuator for controlling speaker volume in a hands-free adaptor

Also Published As

Publication number Publication date
SE218563C1 (en:Method) 1968-01-30
BE626673A (en:Method)
US3214526A (en) 1965-10-26
DE1163393B (de) 1964-02-20

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