JPS6239582B2 - - Google Patents

Info

Publication number
JPS6239582B2
JPS6239582B2 JP54173495A JP17349579A JPS6239582B2 JP S6239582 B2 JPS6239582 B2 JP S6239582B2 JP 54173495 A JP54173495 A JP 54173495A JP 17349579 A JP17349579 A JP 17349579A JP S6239582 B2 JPS6239582 B2 JP S6239582B2
Authority
JP
Japan
Prior art keywords
code
terminal
loop
loop configuration
bits
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
JP54173495A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5698056A (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 JP17349579A priority Critical patent/JPS5698056A/ja
Publication of JPS5698056A publication Critical patent/JPS5698056A/ja
Publication of JPS6239582B2 publication Critical patent/JPS6239582B2/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)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
JP17349579A 1979-12-29 1979-12-29 Loop forming system of data transmission system Granted JPS5698056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17349579A JPS5698056A (en) 1979-12-29 1979-12-29 Loop forming system of data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17349579A JPS5698056A (en) 1979-12-29 1979-12-29 Loop forming system of data transmission system

Publications (2)

Publication Number Publication Date
JPS5698056A JPS5698056A (en) 1981-08-07
JPS6239582B2 true JPS6239582B2 (cs) 1987-08-24

Family

ID=15961562

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17349579A Granted JPS5698056A (en) 1979-12-29 1979-12-29 Loop forming system of data transmission system

Country Status (1)

Country Link
JP (1) JPS5698056A (cs)

Also Published As

Publication number Publication date
JPS5698056A (en) 1981-08-07

Similar Documents

Publication Publication Date Title
US4009469A (en) Loop communications system with method and apparatus for switch to secondary loop
US4351059A (en) Method for testing a digital data transmission line between two modems and a device for the application of said method
US4406919A (en) Method and apparatus for monitoring intermediate regenerative repeaters
US7340023B1 (en) Auto baud system and method and single pin communication interface
CA1270539A (en) Fault location system for a digital transmission line
US3965294A (en) Method of and apparatus for testing transmission line carrying bipolar PCM signals
US4756005A (en) Digital signal regenerator arranged for fault location
US4385383A (en) Error rate detector
EP0606413B1 (en) Method and means for automatically detecting and correcting a polarity error in twisted-pair media
JPS6239582B2 (cs)
JPS6239581B2 (cs)
US3609698A (en) Control station for two-way address communication network
JPS624030B2 (cs)
US3618020A (en) Data transmission systems
US3535448A (en) Two-channel time-multiplex transmission systems
JPS63108828A (ja) デイジタル回線の監視方法
SU1035811A1 (ru) Устройство дл контрол канала передачи данных
JPH04267631A (ja) パリティビット付加方式
JPS5842341A (ja) 信号検出回路
JPH01162032A (ja) 擬似誤り発生装置
JPH0630085A (ja) 誤り符号の挿入機能を具備する通信装置
JPH05103041A (ja) データ処理装置およびその故障検出方法
JPS63290035A (ja) スクランブルドバイナリ型伝送装置
JPH04311125A (ja) 伝送路故障検出回路
JPH034623A (ja) 直列データ伝送システム