GB302217A - Improvements in or relating to automatic or semi-automatic telephone systems - Google Patents

Improvements in or relating to automatic or semi-automatic telephone systems

Info

Publication number
GB302217A
GB302217A GB32131/28A GB3213128A GB302217A GB 302217 A GB302217 A GB 302217A GB 32131/28 A GB32131/28 A GB 32131/28A GB 3213128 A GB3213128 A GB 3213128A GB 302217 A GB302217 A GB 302217A
Authority
GB
United Kingdom
Prior art keywords
relays
digit
control
impulses
switch
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
GB32131/28A
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
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 Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Publication of GB302217A publication Critical patent/GB302217A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Relay Circuits (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

302,217. Associated Telephone & Telegraph Co., and Wicks, J. Aug. 9, 1927. Divided on 302,200. Drawings to Specification. Automatic exchange systems. - The invention relates to register-controllers for use in systems comprising revertive-control switches and consists in a register-controller in which each digit is registered on a separate relay counting set. Each set is in turn saturated by impulses from the corresponding R.-C. switch, the total number of impulses required from the dialled digit and the switch being variable in accordance with the value of the said digit and/or a previous digit. The number of relays in each counting set is less in number than the maximum number of impulses to be registered, and a pair of relays discriminate between odd and even digits for the purpose of controlling the saturation point. Further :relays are provided to control the distribution of the dialled digits, and a set of relays operates in the event of premature release or delayed dialling to control the restoration of the switch train by successively opening and closing the fundamental circuit. The invention is described in relation to an arrangement described in part of Specification 302,200, whereby calls from step-by-step to revertive-control exchanges are set up.
GB32131/28A 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems Expired GB302217A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21042/27A GB302200A (en) 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
GB302217A true GB302217A (en) 1928-12-10

Family

ID=10156190

Family Applications (2)

Application Number Title Priority Date Filing Date
GB21042/27A Expired GB302200A (en) 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems
GB32131/28A Expired GB302217A (en) 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB21042/27A Expired GB302200A (en) 1927-08-09 1927-08-09 Improvements in or relating to automatic or semi-automatic telephone systems

Country Status (3)

Country Link
US (1) US1837003A (en)
FR (2) FR702872A (en)
GB (2) GB302200A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL71657C (en) * 1940-06-11
US2421717A (en) * 1943-04-28 1947-06-03 Kellogg Switchboard & Supply Automatic telephone system
GB577648A (en) * 1944-04-01 1946-05-27 Automatic Telephone & Elect Improvements in or relating to telephone systems
GB586380A (en) * 1944-12-08 1947-03-17 Automatic Telephone & Elect Improvements in telephone systems

Also Published As

Publication number Publication date
US1837003A (en) 1931-12-15
GB302200A (en) 1928-12-10
FR39002E (en) 1931-08-25
FR702872A (en) 1931-04-18

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