JPS544504A - Combined switching system between two wires and four wires - Google Patents

Combined switching system between two wires and four wires

Info

Publication number
JPS544504A
JPS544504A JP6948877A JP6948877A JPS544504A JP S544504 A JPS544504 A JP S544504A JP 6948877 A JP6948877 A JP 6948877A JP 6948877 A JP6948877 A JP 6948877A JP S544504 A JPS544504 A JP S544504A
Authority
JP
Japan
Prior art keywords
wires
switching system
combined switching
wire
trunk
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
JP6948877A
Other languages
Japanese (ja)
Inventor
Saburo Okuda
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 JP6948877A priority Critical patent/JPS544504A/en
Publication of JPS544504A publication Critical patent/JPS544504A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/64—Distributing or queueing
    • H04Q3/66—Traffic distributors

Landscapes

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

Abstract

PURPOSE:To accomplish economization with the numbers of terminals and controllers reduced by enabling the trunk connection of a four-wire trunk via a two-wire network using a two-wire switch.
JP6948877A 1977-06-14 1977-06-14 Combined switching system between two wires and four wires Pending JPS544504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6948877A JPS544504A (en) 1977-06-14 1977-06-14 Combined switching system between two wires and four wires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6948877A JPS544504A (en) 1977-06-14 1977-06-14 Combined switching system between two wires and four wires

Publications (1)

Publication Number Publication Date
JPS544504A true JPS544504A (en) 1979-01-13

Family

ID=13404129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6948877A Pending JPS544504A (en) 1977-06-14 1977-06-14 Combined switching system between two wires and four wires

Country Status (1)

Country Link
JP (1) JPS544504A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5414763A (en) * 1991-04-09 1995-05-09 Canon Kabushiki Kaisha Apparatus and method for providing echo suppression to a plurality of telephones

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5414763A (en) * 1991-04-09 1995-05-09 Canon Kabushiki Kaisha Apparatus and method for providing echo suppression to a plurality of telephones

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