JPS57180249A - Line switching controller - Google Patents

Line switching controller

Info

Publication number
JPS57180249A
JPS57180249A JP56065003A JP6500381A JPS57180249A JP S57180249 A JPS57180249 A JP S57180249A JP 56065003 A JP56065003 A JP 56065003A JP 6500381 A JP6500381 A JP 6500381A JP S57180249 A JPS57180249 A JP S57180249A
Authority
JP
Japan
Prior art keywords
power
communication processor
power supply
supply sequence
line switching
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
JP56065003A
Other languages
Japanese (ja)
Inventor
Masato Yamashita
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56065003A priority Critical patent/JPS57180249A/en
Publication of JPS57180249A publication Critical patent/JPS57180249A/en
Pending 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
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Landscapes

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

Abstract

PURPOSE:To avoid a line from being switched in error, to make power on or off and to increase the reliability of system, even if a connection indicating signal is given to a power supply sequence at power off of a communication processor. CONSTITUTION:Even if a connection indicating signal is given to a power supply sequence at power-off of a communication processor #1 and signal lines S1 and S2 are temporarily held on-state, the condition of set is not established through the presence of NAND gates 131 and 141 and flip-flop 151 is not set. Thus, the power can be turned on or off independently of the power supply sequence of the communication processor.
JP56065003A 1981-04-28 1981-04-28 Line switching controller Pending JPS57180249A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56065003A JPS57180249A (en) 1981-04-28 1981-04-28 Line switching controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56065003A JPS57180249A (en) 1981-04-28 1981-04-28 Line switching controller

Publications (1)

Publication Number Publication Date
JPS57180249A true JPS57180249A (en) 1982-11-06

Family

ID=13274383

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56065003A Pending JPS57180249A (en) 1981-04-28 1981-04-28 Line switching controller

Country Status (1)

Country Link
JP (1) JPS57180249A (en)

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