BE783554R - 2-WIRE-4-WIRE CONVERSION CIRCUIT FOR A DATA SWITCHING CENTER - Google Patents

2-WIRE-4-WIRE CONVERSION CIRCUIT FOR A DATA SWITCHING CENTER

Info

Publication number
BE783554R
BE783554R BE783554A BE783554A BE783554R BE 783554 R BE783554 R BE 783554R BE 783554 A BE783554 A BE 783554A BE 783554 A BE783554 A BE 783554A BE 783554 R BE783554 R BE 783554R
Authority
BE
Belgium
Prior art keywords
wire
conversion circuit
switching center
data switching
wire conversion
Prior art date
Application number
BE783554A
Other languages
French (fr)
Inventor
J S Colardelle
P Girard
C P H Lerouge
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 BE783554R publication Critical patent/BE783554R/en

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)
BE783554A 1971-05-19 1972-05-17 2-WIRE-4-WIRE CONVERSION CIRCUIT FOR A DATA SWITCHING CENTER BE783554R (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BE783554R true BE783554R (en) 1972-11-17

Family

ID=9077306

Family Applications (1)

Application Number Title Priority Date Filing Date
BE783554A BE783554R (en) 1971-05-19 1972-05-17 2-WIRE-4-WIRE CONVERSION CIRCUIT FOR A DATA SWITCHING CENTER

Country Status (8)

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

Also Published As

Publication number Publication date
ES402899A1 (en) 1975-04-16
FR2138208B1 (en) 1973-05-11
DE2223861C3 (en) 1979-01-11
FR2138208A1 (en) 1973-01-05
ZA722858B (en) 1973-04-25
GB1337101A (en) 1973-11-14
DE2223861A1 (en) 1972-12-07
IT1001487B (en) 1976-04-20
DE2223861B2 (en) 1978-05-03
CH586489A5 (en) 1977-03-31

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