JPS5693450A - Data transfer system - Google Patents
Data transfer systemInfo
- 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
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.
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)
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 |
-
1979
- 1979-12-27 JP JP17077679A patent/JPS5693450A/en active Pending
Cited By (1)
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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