JPS5745761A - Extension type data exchanging system - Google Patents

Extension type data exchanging system

Info

Publication number
JPS5745761A
JPS5745761A JP55120854A JP12085480A JPS5745761A JP S5745761 A JPS5745761 A JP S5745761A JP 55120854 A JP55120854 A JP 55120854A JP 12085480 A JP12085480 A JP 12085480A JP S5745761 A JPS5745761 A JP S5745761A
Authority
JP
Japan
Prior art keywords
exchanger
type data
extension type
maximum
exchanging system
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
JP55120854A
Other languages
Japanese (ja)
Inventor
Toru Kobashi
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 JP55120854A priority Critical patent/JPS5745761A/en
Publication of JPS5745761A publication Critical patent/JPS5745761A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

PURPOSE:To make extension independently from a small to large capacity easy, by providing a most suitable isolated exchanger of small capacity. CONSTITUTION:Communication between 00,0s with the function of an exchanger 10 is made via a channel 11 under the control of a control section 21. The control section 21 has a bus for interface with an upper rank concentrated controller 30. Accompanied with the increase in a subscriber, the exchanger 10 is extended via a common channel 40 up to maximum 1m. Thus, the exchanging processing is made only with the exchanger 10, without connecting a concentrated processing 30 to at least maximum <=0s of the subscriber number. Thus, the excessive devices for the common part in minimum units of an exchanger made unnecessary to form an efficient exchanger.
JP55120854A 1980-09-01 1980-09-01 Extension type data exchanging system Pending JPS5745761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55120854A JPS5745761A (en) 1980-09-01 1980-09-01 Extension type data exchanging system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55120854A JPS5745761A (en) 1980-09-01 1980-09-01 Extension type data exchanging system

Publications (1)

Publication Number Publication Date
JPS5745761A true JPS5745761A (en) 1982-03-15

Family

ID=14796582

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55120854A Pending JPS5745761A (en) 1980-09-01 1980-09-01 Extension type data exchanging system

Country Status (1)

Country Link
JP (1) JPS5745761A (en)

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