JPS55130287A - Storing method of carrier circuit for 4-wire exchange device - Google Patents

Storing method of carrier circuit for 4-wire exchange device

Info

Publication number
JPS55130287A
JPS55130287A JP3791179A JP3791179A JPS55130287A JP S55130287 A JPS55130287 A JP S55130287A JP 3791179 A JP3791179 A JP 3791179A JP 3791179 A JP3791179 A JP 3791179A JP S55130287 A JPS55130287 A JP S55130287A
Authority
JP
Japan
Prior art keywords
loop
circuit
carrier
relay
wire
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
JP3791179A
Other languages
Japanese (ja)
Other versions
JPS5824062B2 (en
Inventor
Mutsuo Ezaka
Naoyuki Miyamoto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3791179A priority Critical patent/JPS5824062B2/en
Publication of JPS55130287A publication Critical patent/JPS55130287A/en
Publication of JPS5824062B2 publication Critical patent/JPS5824062B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To decrease the number of component parts by connecting the subscriber circuit of the general 2-wire telephone unit to the telephone reception line of the carrier circuit. CONSTITUTION:In case the signal is transmitted to the register or the trunk from the carrier circuit, relay R of the carrier additional unit via the earth of the RG2- wire is operated. And the DC loop is formed at the telephone reception line, and then the signal is transmitted in the DC loop system to be received at relay A. In case the signal is transmitted to the carrier circuit from the register or the trunk, the simplex system using the middle point of the coil provided to transmission line is applied. The circuit of the 2-wire telephone set is connected to the carrier additional unit, and relays L and CO are operated via the DC loop occurring at the telephone reception line to secure the calling detection. As a result, the number of relays can be decreased. At the same time, relay CO is held by the DC loop, and then the busy tone is piled on the loop to carry out the lock-out of the line.
JP3791179A 1979-03-30 1979-03-30 How to accommodate transport lines in a 4-wire switching device Expired JPS5824062B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3791179A JPS5824062B2 (en) 1979-03-30 1979-03-30 How to accommodate transport lines in a 4-wire switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3791179A JPS5824062B2 (en) 1979-03-30 1979-03-30 How to accommodate transport lines in a 4-wire switching device

Publications (2)

Publication Number Publication Date
JPS55130287A true JPS55130287A (en) 1980-10-08
JPS5824062B2 JPS5824062B2 (en) 1983-05-19

Family

ID=12510721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3791179A Expired JPS5824062B2 (en) 1979-03-30 1979-03-30 How to accommodate transport lines in a 4-wire switching device

Country Status (1)

Country Link
JP (1) JPS5824062B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63181557A (en) * 1987-01-23 1988-07-26 Matsushita Electric Ind Co Ltd Repeating exchange

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6161721A (en) * 1984-09-04 1986-03-29 Inoue Japax Res Inc Electric discharge machining device
JP6884034B2 (en) 2017-05-18 2021-06-09 東京エレクトロン株式会社 Output inspection method for ozone mass flow controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63181557A (en) * 1987-01-23 1988-07-26 Matsushita Electric Ind Co Ltd Repeating exchange

Also Published As

Publication number Publication date
JPS5824062B2 (en) 1983-05-19

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