GB318944A - Improvements in and relating to automatic and semi-automatic telephone exchange systems - Google Patents

Improvements in and relating to automatic and semi-automatic telephone exchange systems

Info

Publication number
GB318944A
GB318944A GB1710028A GB1710028A GB318944A GB 318944 A GB318944 A GB 318944A GB 1710028 A GB1710028 A GB 1710028A GB 1710028 A GB1710028 A GB 1710028A GB 318944 A GB318944 A GB 318944A
Authority
GB
United Kingdom
Prior art keywords
automatic
group
exchange systems
markers
multiline
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
GB1710028A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1710028A priority Critical patent/GB318944A/en
Priority to DEI38187D priority patent/DE602925C/en
Publication of GB318944A publication Critical patent/GB318944A/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)
  • Monitoring And Testing Of Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

318,944. Standard Telephones & Cables, Ltd., (Deakin, G.). June 13, 1928. Drawings to Specification. Automatic exchange systems.-The lines of multiline groups in the banks of a rotary connector are tested by a marking switch common to a number of connectors. These lines are represented in the marking switch bank by terminals which (except the last of a group) are grounded when the corresponding line is busy. When a multiline group is called, the marker and selector advance in turn one step at a time until the marker reaches the ungrounded terminal of an idle line or of the last of a group. The invention is described with reference to a system identical with that described in Specification 318,945 in which the markers and selectors are power driven switches the markers being controlled by a register controller of reverting- impulse type.
GB1710028A 1928-06-13 1928-06-13 Improvements in and relating to automatic and semi-automatic telephone exchange systems Expired GB318944A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1710028A GB318944A (en) 1928-06-13 1928-06-13 Improvements in and relating to automatic and semi-automatic telephone exchange systems
DEI38187D DE602925C (en) 1928-06-13 1929-05-26 Circuit arrangement for multiple connection selector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1710028A GB318944A (en) 1928-06-13 1928-06-13 Improvements in and relating to automatic and semi-automatic telephone exchange systems

Publications (1)

Publication Number Publication Date
GB318944A true GB318944A (en) 1929-09-13

Family

ID=10089243

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1710028A Expired GB318944A (en) 1928-06-13 1928-06-13 Improvements in and relating to automatic and semi-automatic telephone exchange systems

Country Status (2)

Country Link
DE (1) DE602925C (en)
GB (1) GB318944A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE870567C (en) * 1949-05-25 1953-03-16 Siemens Ag Circuit arrangement for telephone systems with dialer operation, in which high-value and low-value connections to individual and collective lines are established via the line selector

Also Published As

Publication number Publication date
DE602925C (en) 1934-09-19

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