JPS5721138A - Channel switching device - Google Patents

Channel switching device

Info

Publication number
JPS5721138A
JPS5721138A JP9669380A JP9669380A JPS5721138A JP S5721138 A JPS5721138 A JP S5721138A JP 9669380 A JP9669380 A JP 9669380A JP 9669380 A JP9669380 A JP 9669380A JP S5721138 A JPS5721138 A JP S5721138A
Authority
JP
Japan
Prior art keywords
circuit
outputted
switching
switching instruction
signals
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
JP9669380A
Other languages
English (en)
Inventor
Yasuo Kubo
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
NEC Corp
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9669380A priority Critical patent/JPS5721138A/ja
Publication of JPS5721138A publication Critical patent/JPS5721138A/ja
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
JP9669380A 1980-07-15 1980-07-15 Channel switching device Pending JPS5721138A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9669380A JPS5721138A (en) 1980-07-15 1980-07-15 Channel switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9669380A JPS5721138A (en) 1980-07-15 1980-07-15 Channel switching device

Publications (1)

Publication Number Publication Date
JPS5721138A true JPS5721138A (en) 1982-02-03

Family

ID=14171850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9669380A Pending JPS5721138A (en) 1980-07-15 1980-07-15 Channel switching device

Country Status (1)

Country Link
JP (1) JPS5721138A (ja)

Similar Documents

Publication Publication Date Title
EP0213037A3 (en) Semiconductor memory device having test pattern generating circuit
EP0369716A3 (en) Amplifying circuit
JPS5721138A (en) Channel switching device
EP0185936A3 (en) Interface circuit arrangement for connecting data sources with data sinks, and switching systems with such an interface circuit arrangement
JPS5720848A (en) Automatic switching device for double system device
DE3377260D1 (en) Circuit arrangement for the transmission of signals between subscriber lines and at least one transmission line of a services integrated communication centre
JPS57148479A (en) Apparatus controlling system
EP0117357A3 (en) Digital signal composing circuits
JPS57164338A (en) Selection circuit for priority
JPS57117043A (en) Digital operation control device
JPS5775345A (en) Controller of communication circuit
SU641649A1 (ru) Коммутирующее устройство
JPS5799030A (en) Signal switching circuit
JPS5750059A (en) Status history memory system
JPS56102147A (en) Data switching system
JPS54149438A (en) Sequence control circuit
JPS5613854A (en) Double loop switching system
JPS5513570A (en) Automatic raising system of double central control units at trouble time
JPS55134402A (en) Process control unit
JPS5792953A (en) Line switching system
SE9300895D0 (sv) Anordning i en vaeljarutrustning
FR2418882A1 (fr) Circuit d'automatisme pneumatique
JPS57185787A (en) Switching system for duplex time division exchanger circuit
JPS57106294A (en) Connection control system of time division multi-switch
JPS5744366A (en) Trunk test system