JPS56132856A - Manual instantaneous tandem connection system - Google Patents

Manual instantaneous tandem connection system

Info

Publication number
JPS56132856A
JPS56132856A JP3654880A JP3654880A JPS56132856A JP S56132856 A JPS56132856 A JP S56132856A JP 3654880 A JP3654880 A JP 3654880A JP 3654880 A JP3654880 A JP 3654880A JP S56132856 A JPS56132856 A JP S56132856A
Authority
JP
Japan
Prior art keywords
trunk
terminal
operator
att
incoming
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.)
Granted
Application number
JP3654880A
Other languages
Japanese (ja)
Other versions
JPS6132861B2 (en
Inventor
Kunihiko Fujiwara
Toshiyuki Kobayashi
Mutsuo Ezaka
Kozo Nakamura
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.)
JAPANESE NATIONAL RAILWAYS<JNR>
Fujitsu Ltd
Japan National Railways
Original Assignee
JAPANESE NATIONAL RAILWAYS<JNR>
Fujitsu Ltd
Japan National Railways
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 JAPANESE NATIONAL RAILWAYS<JNR>, Fujitsu Ltd, Japan National Railways filed Critical JAPANESE NATIONAL RAILWAYS<JNR>
Priority to JP3654880A priority Critical patent/JPS56132856A/en
Publication of JPS56132856A publication Critical patent/JPS56132856A/en
Publication of JPS6132861B2 publication Critical patent/JPS6132861B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To simplify the constitution of an operator trunk and also save the number of store terminals, by connecting a manual desk incoming trunk line to the main channel line side terminal of an operator trunk corresponding to the manual desk, and also originating-connecting a called trunk line in accordance with a specific sequence. CONSTITUTION:When an incoming call to the manual desk ATT has come into the incoming trunk for the trunk line T1, the ICT is connected to the terminal D and a call to an ATT operator becomes possible. The trunk line T1 and T2 are connected by selecting the T2 by the ATT operator. In this case, the path 6 connecting the ICT and the terminal D is released and also the terminal D and the terminal E of the operator trunk OPT2 is connection-changed. After that, the outgoing trunk OGT for the T2 is originating-connected to the terminal D of the main channel network NW line side by the path 8. After the ATT operator has informed a called party in the T2 of incoming from the T1, when the connection is released, the ICT and the OGT are directly connected, and call is made between the T1 calling party and the T2 called party. At the same time, the OPT2 and the paths 7, 8 are released.
JP3654880A 1980-03-22 1980-03-22 Manual instantaneous tandem connection system Granted JPS56132856A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3654880A JPS56132856A (en) 1980-03-22 1980-03-22 Manual instantaneous tandem connection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3654880A JPS56132856A (en) 1980-03-22 1980-03-22 Manual instantaneous tandem connection system

Publications (2)

Publication Number Publication Date
JPS56132856A true JPS56132856A (en) 1981-10-17
JPS6132861B2 JPS6132861B2 (en) 1986-07-30

Family

ID=12472813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3654880A Granted JPS56132856A (en) 1980-03-22 1980-03-22 Manual instantaneous tandem connection system

Country Status (1)

Country Link
JP (1) JPS56132856A (en)

Also Published As

Publication number Publication date
JPS6132861B2 (en) 1986-07-30

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