FR947897A - Automatic switching device for telecommunications systems - Google Patents

Automatic switching device for telecommunications systems

Info

Publication number
FR947897A
FR947897A FR947897DA FR947897A FR 947897 A FR947897 A FR 947897A FR 947897D A FR947897D A FR 947897DA FR 947897 A FR947897 A FR 947897A
Authority
FR
France
Prior art keywords
switching device
automatic switching
telecommunications systems
telecommunications
systems
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
Other languages
French (fr)
Inventor
Esmond Philip Goodwin Wright
George Clifford Hartley
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR947897A publication Critical patent/FR947897A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR947897D 1940-04-26 1947-06-13 Automatic switching device for telecommunications systems Expired FR947897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB753540A GB540741A (en) 1940-04-26 1940-04-26 Improvements in or relating to automatic telecommunication systems

Publications (1)

Publication Number Publication Date
FR947897A true FR947897A (en) 1949-07-15

Family

ID=9834970

Family Applications (1)

Application Number Title Priority Date Filing Date
FR947897D Expired FR947897A (en) 1940-04-26 1947-06-13 Automatic switching device for telecommunications systems

Country Status (2)

Country Link
FR (1) FR947897A (en)
GB (1) GB540741A (en)

Also Published As

Publication number Publication date
GB540741A (en) 1941-10-28

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