AU473570B2 - A common control telephone exchange system using mechanical latching type crossbar switches - Google Patents

A common control telephone exchange system using mechanical latching type crossbar switches

Info

Publication number
AU473570B2
AU473570B2 AU63937/73A AU6393773A AU473570B2 AU 473570 B2 AU473570 B2 AU 473570B2 AU 63937/73 A AU63937/73 A AU 63937/73A AU 6393773 A AU6393773 A AU 6393773A AU 473570 B2 AU473570 B2 AU 473570B2
Authority
AU
Australia
Prior art keywords
relay
switch
line
terminal unit
common control
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.)
Expired
Application number
AU63937/73A
Other languages
English (en)
Other versions
AU6393773A (en
Inventor
Moriyama Mclosure Kuwabara Katsuyuki Jin Tadao Tsuruda Fukumi
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
Publication of AU6393773A publication Critical patent/AU6393773A/en
Application granted granted Critical
Publication of AU473570B2 publication Critical patent/AU473570B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Interface Circuits In Exchanges (AREA)
AU63937/73A 1972-12-25 1973-12-27 A common control telephone exchange system using mechanical latching type crossbar switches Expired AU473570B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JPJP129260// 1972-12-25
JP47129260A JPS4987208A (esLanguage) 1972-12-25 1972-12-25

Publications (2)

Publication Number Publication Date
AU6393773A AU6393773A (en) 1975-07-03
AU473570B2 true AU473570B2 (en) 1976-06-24

Family

ID=15005156

Family Applications (1)

Application Number Title Priority Date Filing Date
AU63937/73A Expired AU473570B2 (en) 1972-12-25 1973-12-27 A common control telephone exchange system using mechanical latching type crossbar switches

Country Status (5)

Country Link
US (1) US3941952A (esLanguage)
JP (1) JPS4987208A (esLanguage)
AU (1) AU473570B2 (esLanguage)
BR (1) BR7310089D0 (esLanguage)
CA (1) CA998153A (esLanguage)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53114602A (en) * 1977-03-17 1978-10-06 Fujitsu Ltd Off-normal control system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL236109A (esLanguage) * 1958-02-14

Also Published As

Publication number Publication date
BR7310089D0 (pt) 1974-08-15
JPS4987208A (esLanguage) 1974-08-21
US3941952A (en) 1976-03-02
CA998153A (en) 1976-10-05
AU6393773A (en) 1975-07-03

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