JPS56110394A - Input connection system - Google Patents

Input connection system

Info

Publication number
JPS56110394A
JPS56110394A JP1250880A JP1250880A JPS56110394A JP S56110394 A JPS56110394 A JP S56110394A JP 1250880 A JP1250880 A JP 1250880A JP 1250880 A JP1250880 A JP 1250880A JP S56110394 A JPS56110394 A JP S56110394A
Authority
JP
Japan
Prior art keywords
trunk
change
incoming
lines
ict
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
JP1250880A
Other languages
Japanese (ja)
Inventor
Tetsuo Takemura
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 JP1250880A priority Critical patent/JPS56110394A/en
Publication of JPS56110394A publication Critical patent/JPS56110394A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To enable to use an incoming trunk commonly to a plurality of routes, by providing a change-over unit at the trunk line side of the incoming trunk and then securing a connection among the trunk lines of plural routes via the change- over unit. CONSTITUTION:A simple change-over unit TU is provided between the incoming trunk ICT and the trunk line. When the change-over relay T works, the lines AN and BN are connected with the lines A and B of the trunk ICT via the contacts t<0> and t<1> each. Thus the trunk ICT works as an incoming call trunk of the route N. Then the earth of the contact t<2> is sent to the line BO, and thus the opposite trunk of the repeating route O is blocked.
JP1250880A 1980-02-06 1980-02-06 Input connection system Pending JPS56110394A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1250880A JPS56110394A (en) 1980-02-06 1980-02-06 Input connection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1250880A JPS56110394A (en) 1980-02-06 1980-02-06 Input connection system

Publications (1)

Publication Number Publication Date
JPS56110394A true JPS56110394A (en) 1981-09-01

Family

ID=11807281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1250880A Pending JPS56110394A (en) 1980-02-06 1980-02-06 Input connection system

Country Status (1)

Country Link
JP (1) JPS56110394A (en)

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