GB540741A - Improvements in or relating to automatic telecommunication systems - Google Patents

Improvements in or relating to automatic telecommunication systems

Info

Publication number
GB540741A
GB540741A GB753540A GB753540A GB540741A GB 540741 A GB540741 A GB 540741A GB 753540 A GB753540 A GB 753540A GB 753540 A GB753540 A GB 753540A GB 540741 A GB540741 A GB 540741A
Authority
GB
United Kingdom
Prior art keywords
relating
telecommunication systems
finders
order
automatic telecommunication
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
GB753540A
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.)
ESMOND PHILIP GOOWIN WRIGHT
STC PLC
Original Assignee
ESMOND PHILIP GOOWIN WRIGHT
Standard Telephone and Cables PLC
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 ESMOND PHILIP GOOWIN WRIGHT, Standard Telephone and Cables PLC filed Critical ESMOND PHILIP GOOWIN WRIGHT
Priority to GB753540A priority Critical patent/GB540741A/en
Publication of GB540741A publication Critical patent/GB540741A/en
Priority to FR947897D priority 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)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

540,741. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd., WRIGHT, E. P. G., and HARTLEY, G. C. April 26, 1940, No. 7535. [Class 40 (iv)] A closed chain circuit for allotting the finders of a group P-W for use in sequence is provided with a number of points of entry over wires SA-SD to which the start wire SL is connected in turn by a constantly rotating switch RU to vary the order of choice of the finders. The wires SA-SD may be connected up by the switch RU in an order other than the straightforward one shown.
GB753540A 1940-04-26 1940-04-26 Improvements in or relating to automatic telecommunication systems Expired GB540741A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB753540A GB540741A (en) 1940-04-26 1940-04-26 Improvements in or relating to automatic telecommunication systems
FR947897D FR947897A (en) 1940-04-26 1947-06-13 Automatic switching device for telecommunications systems

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
GB540741A true GB540741A (en) 1941-10-28

Family

ID=9834970

Family Applications (1)

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

Country Status (2)

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

Also Published As

Publication number Publication date
FR947897A (en) 1949-07-15

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