JPS624030B2 - - Google Patents

Info

Publication number
JPS624030B2
JPS624030B2 JP55051768A JP5176880A JPS624030B2 JP S624030 B2 JPS624030 B2 JP S624030B2 JP 55051768 A JP55051768 A JP 55051768A JP 5176880 A JP5176880 A JP 5176880A JP S624030 B2 JPS624030 B2 JP S624030B2
Authority
JP
Japan
Prior art keywords
code
signal
loop
circuit
terminal
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
JP55051768A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56149141A (en
Inventor
Yoshimitsu Okano
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
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP5176880A priority Critical patent/JPS56149141A/ja
Publication of JPS56149141A publication Critical patent/JPS56149141A/ja
Publication of JPS624030B2 publication Critical patent/JPS624030B2/ja
Granted 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)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
JP5176880A 1980-04-21 1980-04-21 Loop constitution system of data transmission system Granted JPS56149141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5176880A JPS56149141A (en) 1980-04-21 1980-04-21 Loop constitution system of data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5176880A JPS56149141A (en) 1980-04-21 1980-04-21 Loop constitution system of data transmission system

Publications (2)

Publication Number Publication Date
JPS56149141A JPS56149141A (en) 1981-11-18
JPS624030B2 true JPS624030B2 (enrdf_load_html_response) 1987-01-28

Family

ID=12896121

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5176880A Granted JPS56149141A (en) 1980-04-21 1980-04-21 Loop constitution system of data transmission system

Country Status (1)

Country Link
JP (1) JPS56149141A (enrdf_load_html_response)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63227262A (ja) * 1987-03-17 1988-09-21 Matsushita Electric Ind Co Ltd 信号検出回路
JPH01160139A (ja) * 1987-12-16 1989-06-23 Fujitsu Ltd データの折返し試験方式

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54150907A (en) * 1978-05-19 1979-11-27 Fujitsu Ltd Loop test control system

Also Published As

Publication number Publication date
JPS56149141A (en) 1981-11-18

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