GB8819467D0 - Telephone instruments - Google Patents

Telephone instruments

Info

Publication number
GB8819467D0
GB8819467D0 GB888819467A GB8819467A GB8819467D0 GB 8819467 D0 GB8819467 D0 GB 8819467D0 GB 888819467 A GB888819467 A GB 888819467A GB 8819467 A GB8819467 A GB 8819467A GB 8819467 D0 GB8819467 D0 GB 8819467D0
Authority
GB
United Kingdom
Prior art keywords
telephone instruments
instruments
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.)
Withdrawn
Application number
GB888819467A
Other versions
GB2214761A (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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Publication of GB8819467D0 publication Critical patent/GB8819467D0/en
Publication of GB2214761A publication Critical patent/GB2214761A/en
Withdrawn legal-status Critical Current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
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
GB8819467A 1988-01-18 1988-08-16 Telephone instrument Withdrawn GB2214761A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8801034 1988-01-18

Publications (2)

Publication Number Publication Date
GB8819467D0 true GB8819467D0 (en) 1988-09-21
GB2214761A GB2214761A (en) 1989-09-06

Family

ID=10630125

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8819467A Withdrawn GB2214761A (en) 1988-01-18 1988-08-16 Telephone instrument

Country Status (1)

Country Link
GB (1) GB2214761A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6169801B1 (en) 1998-03-16 2001-01-02 Midcom, Inc. Digital isolation apparatus and method

Also Published As

Publication number Publication date
GB2214761A (en) 1989-09-06

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)