GB628177A - Improvements in or relating to telecommunication switching systems - Google Patents

Improvements in or relating to telecommunication switching systems

Info

Publication number
GB628177A
GB628177A GB20443/46A GB2044346A GB628177A GB 628177 A GB628177 A GB 628177A GB 20443/46 A GB20443/46 A GB 20443/46A GB 2044346 A GB2044346 A GB 2044346A GB 628177 A GB628177 A GB 628177A
Authority
GB
United Kingdom
Prior art keywords
specifications
relating
outlet
switching systems
register
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
GB20443/46A
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
Publication of GB628177A publication Critical patent/GB628177A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Telephonic Communication Services (AREA)

Abstract

628,177. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd. Dec. 8, 1944, No. 20443/46. Convention date, Feb. 5, 1944. Divided out of 628,174. Drawings to Specification. [Class 40 (iv)] In an automatic exchange system. in which selectors are controlled by comparison of electrical conditions characteristic of each outlet with numerically selected conditions in a register controller, inter-exchange trunks may be connected to any outlet from any selector, means being provided on switching through to sucha trunk to cause the register-controller to transmit impulses for the remainder of the digits. The subject-matter is identical with that of Specifications 628,174 which, together with Specifications 628,176, 628,178, 628,179 and 628,242, claims other features. Specifications 558,416, 563,501, 573,405, 577,088, 592,846, and 593,687 also are referred to.
GB20443/46A 1944-02-05 1944-12-08 Improvements in or relating to telecommunication switching systems Expired GB628177A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US628177XA 1944-02-05 1944-02-05

Publications (1)

Publication Number Publication Date
GB628177A true GB628177A (en) 1949-08-24

Family

ID=22045019

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20443/46A Expired GB628177A (en) 1944-02-05 1944-12-08 Improvements in or relating to telecommunication switching systems

Country Status (1)

Country Link
GB (1) GB628177A (en)

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