JPS57115054A - Multiplex concentrator and alloter device - Google Patents

Multiplex concentrator and alloter device

Info

Publication number
JPS57115054A
JPS57115054A JP124481A JP124481A JPS57115054A JP S57115054 A JPS57115054 A JP S57115054A JP 124481 A JP124481 A JP 124481A JP 124481 A JP124481 A JP 124481A JP S57115054 A JPS57115054 A JP S57115054A
Authority
JP
Japan
Prior art keywords
alloter
concentrator
trunk circuit
channel
control part
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
JP124481A
Other languages
Japanese (ja)
Inventor
Fumio Akiyama
Tomoo Motohashi
Fusayoshi Aso
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP124481A priority Critical patent/JPS57115054A/en
Publication of JPS57115054A publication Critical patent/JPS57115054A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/50—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication
    • H04L12/52—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication using time division techniques
    • H04L12/525—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication using time division techniques involving a stored program control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To prevent the lowering of the data transfer capability of the system, by using an optional idle channel on a trunk circuit to transmit and receive control information such as a line folding instruction. CONSTITUTION:When the transmission of control information such as a line folding instruction and a backup instruction from a multiplex concentrator and alloter device 4 to a multiplex concentrator and alloter device 9 in the center side is required, a trunk circuit control part 44 of the concentrator and alloter device 4 scans parameter set areas to search an idle channel. When an idle channel is found, a specific address is set to the parameter set area of this channel, and this channel is used to transmit control information with partitions of every four bytes. Meanwhile, the trunk circuit control part 44 of the concentrator and alloter device 9 in the center side receives this transmission sgnal; and when it is discriminated that an identification code of address information is set in the first byte and following three bytes are equal to one another and indicate an address for control information, the trunk circuit control part 44 judges that succeeding data on this channel is control information, and the trunk circuit control part 44 transfer address contents to a specific control part.
JP124481A 1981-01-09 1981-01-09 Multiplex concentrator and alloter device Pending JPS57115054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP124481A JPS57115054A (en) 1981-01-09 1981-01-09 Multiplex concentrator and alloter device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP124481A JPS57115054A (en) 1981-01-09 1981-01-09 Multiplex concentrator and alloter device

Publications (1)

Publication Number Publication Date
JPS57115054A true JPS57115054A (en) 1982-07-17

Family

ID=11496033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP124481A Pending JPS57115054A (en) 1981-01-09 1981-01-09 Multiplex concentrator and alloter device

Country Status (1)

Country Link
JP (1) JPS57115054A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01306034A (en) * 1988-05-30 1989-12-11 Yanagawa Seiko Kk Cutting method for metallic wire rod

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01306034A (en) * 1988-05-30 1989-12-11 Yanagawa Seiko Kk Cutting method for metallic wire rod

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