JPS5625856A - Signal folding control system in data transmission system - Google Patents

Signal folding control system in data transmission system

Info

Publication number
JPS5625856A
JPS5625856A JP10239379A JP10239379A JPS5625856A JP S5625856 A JPS5625856 A JP S5625856A JP 10239379 A JP10239379 A JP 10239379A JP 10239379 A JP10239379 A JP 10239379A JP S5625856 A JPS5625856 A JP S5625856A
Authority
JP
Japan
Prior art keywords
transmission
terminal
folding
station
reception
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
JP10239379A
Other languages
Japanese (ja)
Other versions
JPS5920217B2 (en
Inventor
Yoshitsugu Yamanashi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP54102393A priority Critical patent/JPS5920217B2/en
Publication of JPS5625856A publication Critical patent/JPS5625856A/en
Publication of JPS5920217B2 publication Critical patent/JPS5920217B2/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)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Dc Digital Transmission (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

PURPOSE:To enable the folding control of MODEM at the remote station even if the remote station is not in operation, by providing the control signal bit for remote station folding in the transmission signal frame. CONSTITUTION:In normal communication state, the terminal units 3, 4 of the terminal stations 1, 2 produce the RS signal, and the transmission sections 7, 8 and reception sections 9, 10 perform the transmission and reception of data with the transmission timing signal ST, transmission data SD, reception timing signal RT and reception data RD. In testing the terminal station 2 from the terminal station 1, the terminal station 1 provides the remote station folding control signal bit RMT in the transmission data frame 12 and takes this as ''1''. In the MODEM 6 of the terminal station 2, even if the terminal unit is not in operation, the folding circuit in the MODEM 6 is controlled with ''1'' of the said RMT bit to complete the folding route.
JP54102393A 1979-08-10 1979-08-10 Signal return control method in data transmission system Expired JPS5920217B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54102393A JPS5920217B2 (en) 1979-08-10 1979-08-10 Signal return control method in data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54102393A JPS5920217B2 (en) 1979-08-10 1979-08-10 Signal return control method in data transmission system

Publications (2)

Publication Number Publication Date
JPS5625856A true JPS5625856A (en) 1981-03-12
JPS5920217B2 JPS5920217B2 (en) 1984-05-11

Family

ID=14326194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54102393A Expired JPS5920217B2 (en) 1979-08-10 1979-08-10 Signal return control method in data transmission system

Country Status (1)

Country Link
JP (1) JPS5920217B2 (en)

Also Published As

Publication number Publication date
JPS5920217B2 (en) 1984-05-11

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