GB407884A - Improvements in or relating to four-wire telephone systems - Google Patents

Improvements in or relating to four-wire telephone systems

Info

Publication number
GB407884A
GB407884A GB25171/33A GB2517133A GB407884A GB 407884 A GB407884 A GB 407884A GB 25171/33 A GB25171/33 A GB 25171/33A GB 2517133 A GB2517133 A GB 2517133A GB 407884 A GB407884 A GB 407884A
Authority
GB
United Kingdom
Prior art keywords
suppressors
echo
connections
centre
wire
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
GB25171/33A
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.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens and Halske AG
Siemens Corp
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 Siemens and Halske AG, Siemens Corp filed Critical Siemens and Halske AG
Publication of GB407884A publication Critical patent/GB407884A/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)
GB25171/33A 1932-09-10 1933-09-11 Improvements in or relating to four-wire telephone systems Expired GB407884A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE407884X 1932-09-10

Publications (1)

Publication Number Publication Date
GB407884A true GB407884A (en) 1934-03-29

Family

ID=6422235

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25171/33A Expired GB407884A (en) 1932-09-10 1933-09-11 Improvements in or relating to four-wire telephone systems

Country Status (4)

Country Link
US (1) US2041562A (enrdf_load_stackoverflow)
BE (1) BE398557A (enrdf_load_stackoverflow)
FR (1) FR761950A (enrdf_load_stackoverflow)
GB (1) GB407884A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518880A (en) * 1967-07-13 1970-07-07 Badger Meter Mfg Co Metering apparatus

Also Published As

Publication number Publication date
US2041562A (en) 1936-05-19
FR761950A (fr) 1934-03-30
BE398557A (enrdf_load_stackoverflow)

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