IT1001487B - Perfezionamento nei circuiti di conversione da due fili a quattro fili per un centro di commutazione di dati - Google Patents

Perfezionamento nei circuiti di conversione da due fili a quattro fili per un centro di commutazione di dati

Info

Publication number
IT1001487B
IT1001487B IT24366/72A IT2436672A IT1001487B IT 1001487 B IT1001487 B IT 1001487B IT 24366/72 A IT24366/72 A IT 24366/72A IT 2436672 A IT2436672 A IT 2436672A IT 1001487 B IT1001487 B IT 1001487B
Authority
IT
Italy
Prior art keywords
wire
improvement
switching center
conversion circuits
data switching
Prior art date
Application number
IT24366/72A
Other languages
English (en)
Italian (it)
Original Assignee
Int Standard Electric 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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Application granted granted Critical
Publication of IT1001487B publication Critical patent/IT1001487B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/22—Repeaters for converting two wires to four wires; Repeaters for converting single current to double current

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
IT24366/72A 1971-05-19 1972-05-16 Perfezionamento nei circuiti di conversione da due fili a quattro fili per un centro di commutazione di dati IT1001487B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR717118151A FR2138208B1 (fr) 1971-05-19 1971-05-19

Publications (1)

Publication Number Publication Date
IT1001487B true IT1001487B (it) 1976-04-20

Family

ID=9077306

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24366/72A IT1001487B (it) 1971-05-19 1972-05-16 Perfezionamento nei circuiti di conversione da due fili a quattro fili per un centro di commutazione di dati

Country Status (8)

Country Link
BE (1) BE783554R (fr)
CH (1) CH586489A5 (fr)
DE (1) DE2223861C3 (fr)
ES (1) ES402899A1 (fr)
FR (1) FR2138208B1 (fr)
GB (1) GB1337101A (fr)
IT (1) IT1001487B (fr)
ZA (1) ZA722858B (fr)

Also Published As

Publication number Publication date
BE783554R (fr) 1972-11-17
ES402899A1 (es) 1975-04-16
FR2138208A1 (fr) 1973-01-05
DE2223861B2 (de) 1978-05-03
GB1337101A (fr) 1973-11-14
FR2138208B1 (fr) 1973-05-11
DE2223861C3 (de) 1979-01-11
CH586489A5 (fr) 1977-03-31
ZA722858B (en) 1973-04-25
DE2223861A1 (de) 1972-12-07

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