JPS53109410A - Loop back control system - Google Patents

Loop back control system

Info

Publication number
JPS53109410A
JPS53109410A JP2497977A JP2497977A JPS53109410A JP S53109410 A JPS53109410 A JP S53109410A JP 2497977 A JP2497977 A JP 2497977A JP 2497977 A JP2497977 A JP 2497977A JP S53109410 A JPS53109410 A JP S53109410A
Authority
JP
Japan
Prior art keywords
loop back
control system
back control
make
automatic
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.)
Granted
Application number
JP2497977A
Other languages
Japanese (ja)
Other versions
JPS5930355B2 (en
Inventor
Kazuo Nishitani
Noritaka Tatsui
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2497977A priority Critical patent/JPS5930355B2/en
Publication of JPS53109410A publication Critical patent/JPS53109410A/en
Publication of JPS5930355B2 publication Critical patent/JPS5930355B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/242—Testing correct operation by comparing a transmitted test signal with a locally generated replica
    • H04L1/243—Testing correct operation by comparing a transmitted test signal with a locally generated replica at the transmitter, using a loop-back

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To make possible the automatic remote loop back, to make the unit small in size and to reduce the number of malfunction, by utilizing the initial training signal series for automatic equalizer, in the data transmission MODEM.
JP2497977A 1977-03-07 1977-03-07 Loopback control method Expired JPS5930355B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2497977A JPS5930355B2 (en) 1977-03-07 1977-03-07 Loopback control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2497977A JPS5930355B2 (en) 1977-03-07 1977-03-07 Loopback control method

Publications (2)

Publication Number Publication Date
JPS53109410A true JPS53109410A (en) 1978-09-25
JPS5930355B2 JPS5930355B2 (en) 1984-07-26

Family

ID=12153086

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2497977A Expired JPS5930355B2 (en) 1977-03-07 1977-03-07 Loopback control method

Country Status (1)

Country Link
JP (1) JPS5930355B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6273649U (en) * 1985-10-28 1987-05-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6273649U (en) * 1985-10-28 1987-05-12

Also Published As

Publication number Publication date
JPS5930355B2 (en) 1984-07-26

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