GB794815A - Improvements in or relating to automatic telecommunication exchange - Google Patents

Improvements in or relating to automatic telecommunication exchange

Info

Publication number
GB794815A
GB794815A GB361256A GB361256A GB794815A GB 794815 A GB794815 A GB 794815A GB 361256 A GB361256 A GB 361256A GB 361256 A GB361256 A GB 361256A GB 794815 A GB794815 A GB 794815A
Authority
GB
United Kingdom
Prior art keywords
group
lines
wanted
relating
marking
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
GB361256A
Inventor
Frederick Harry Bray
Ronald George Knight
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.)
STC PLC
Original Assignee
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB361256A priority Critical patent/GB794815A/en
Publication of GB794815A publication Critical patent/GB794815A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/525—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using tubes in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)

Abstract

794,815. Automatic telephone systems. STANDARD TELEPHONES & CABLES, Ltd. Sept. 30, 1955 [Oct. 5, 1954], No. 3612/56. Divided out of 794,812. Drawings to Specification. Class 40 (4). The description is identical with part of that of Specification 794,812, the claims being restricted to the operation of the system to effect connection to lines of P.B.X. groups, wherein in response to the directory number of a wanted P.B.X. group a first marking is applied to the line circuits of all the lines of the wanted group, a second marking being applied by control means to the line circuits of all P.B.X. lines (irrespective of the group to which they belong) which are accessible over free switching equipment, and a connection is extended to a free line of the wanted group over free switching equipment under control of the two markings. Specifications 734,345, [Group XL (c)], 756,848, [Group XV], and 788,592 are referred to.
GB361256A 1954-10-05 1954-10-05 Improvements in or relating to automatic telecommunication exchange Expired GB794815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB361256A GB794815A (en) 1954-10-05 1954-10-05 Improvements in or relating to automatic telecommunication exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB361256A GB794815A (en) 1954-10-05 1954-10-05 Improvements in or relating to automatic telecommunication exchange

Publications (1)

Publication Number Publication Date
GB794815A true GB794815A (en) 1958-05-14

Family

ID=9761610

Family Applications (1)

Application Number Title Priority Date Filing Date
GB361256A Expired GB794815A (en) 1954-10-05 1954-10-05 Improvements in or relating to automatic telecommunication exchange

Country Status (1)

Country Link
GB (1) GB794815A (en)

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