JPS5693450A - Data transfer system - Google Patents

Data transfer system

Info

Publication number
JPS5693450A
JPS5693450A JP17077679A JP17077679A JPS5693450A JP S5693450 A JPS5693450 A JP S5693450A JP 17077679 A JP17077679 A JP 17077679A JP 17077679 A JP17077679 A JP 17077679A JP S5693450 A JPS5693450 A JP S5693450A
Authority
JP
Japan
Prior art keywords
fault data
fault
line
check bit
data transfer
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.)
Pending
Application number
JP17077679A
Other languages
Japanese (ja)
Inventor
Atsushi Ushiwatari
Yuji Hirokawa
Yoshio Koda
Toru Hoshi
Sho Mototani
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
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Fujitsu Ltd
Hitachi Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
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 Fujitsu Ltd, Hitachi Ltd, NEC Corp, Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP17077679A priority Critical patent/JPS5693450A/en
Publication of JPS5693450A publication Critical patent/JPS5693450A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/20—Arrangements affording multiple use of the transmission path using different combinations of lines, e.g. phantom working

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To decide the error of data by the check bit transferred by another line even if one line becomes faulty, by using two trunk lines between exchange and by transferring fault data by one line and by transferring the check bit by another line. CONSTITUTION:When a fault occurs in the exchange, the fault data transfer request is transmitted to fault data transfer device 20. Fault transfer device 20 starts fault data receiving device 21 by this request, and transmits fault data by trunk line 22 when the start completion signal is received. Simultaneously, the inverted check bit of the pulse train of fault data is transmitted by trunk line 23. Fault data receiving device 21 collates fault data and the check bit for every one pulse, and performs the fault data receiving normalcy processing if they agree with each other. At this time, receiving defect is decided by this collation even if the fault occurs in one line.
JP17077679A 1979-12-27 1979-12-27 Data transfer system Pending JPS5693450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17077679A JPS5693450A (en) 1979-12-27 1979-12-27 Data transfer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17077679A JPS5693450A (en) 1979-12-27 1979-12-27 Data transfer system

Publications (1)

Publication Number Publication Date
JPS5693450A true JPS5693450A (en) 1981-07-29

Family

ID=15911157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17077679A Pending JPS5693450A (en) 1979-12-27 1979-12-27 Data transfer system

Country Status (1)

Country Link
JP (1) JPS5693450A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007235621A (en) * 2006-03-01 2007-09-13 Nec Corp Data transmission system and data transmission method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007235621A (en) * 2006-03-01 2007-09-13 Nec Corp Data transmission system and data transmission method

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