JPS55156448A - Branch unit - Google Patents

Branch unit

Info

Publication number
JPS55156448A
JPS55156448A JP6322579A JP6322579A JPS55156448A JP S55156448 A JPS55156448 A JP S55156448A JP 6322579 A JP6322579 A JP 6322579A JP 6322579 A JP6322579 A JP 6322579A JP S55156448 A JPS55156448 A JP S55156448A
Authority
JP
Japan
Prior art keywords
branch terminal
selector
transmission request
equipment
terminal equipment
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
JP6322579A
Other languages
Japanese (ja)
Inventor
Masafumi Fujikawa
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 JP6322579A priority Critical patent/JPS55156448A/en
Publication of JPS55156448A publication Critical patent/JPS55156448A/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
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks

Landscapes

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

Abstract

PURPOSE:To obtain a branch unit which can lighten a load on a branch terminal equipment by inhibiting any other branch terminal equipment than one branch terminal equipment in process of communication by a transmission request signal while a center equipment and the branch terminal equipment are in process of communication. CONSTITUTION:Receiving transmission request signals RS1-RSn, ready-for-sending signals CS1-CSn, and DC data SD1-SDn from respective terminals, selectors 211-21n provided corresponding to branch terminal equipments allows a center equipment to communicate with branch terminal equipment through gates 24 and 25 and a MODEM which is not shown in the figure. Now, while a terminal corresponding to selector 211 communicates with the center equipment, transmission request output RS1 of selector 211 sets any other selector and flip-flop 22n belonging to 21n in case of the figure via gate 23n and its set output inhibits selector 21n from operating, so that the transmission request, etc., from a branch terminal belonging to this selector will be cut off.
JP6322579A 1979-05-24 1979-05-24 Branch unit Pending JPS55156448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6322579A JPS55156448A (en) 1979-05-24 1979-05-24 Branch unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6322579A JPS55156448A (en) 1979-05-24 1979-05-24 Branch unit

Publications (1)

Publication Number Publication Date
JPS55156448A true JPS55156448A (en) 1980-12-05

Family

ID=13223046

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6322579A Pending JPS55156448A (en) 1979-05-24 1979-05-24 Branch unit

Country Status (1)

Country Link
JP (1) JPS55156448A (en)

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