GB236497A - 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
GB236497A
GB236497A GB780725A GB780725A GB236497A GB 236497 A GB236497 A GB 236497A GB 780725 A GB780725 A GB 780725A GB 780725 A GB780725 A GB 780725A GB 236497 A GB236497 A GB 236497A
Authority
GB
United Kingdom
Prior art keywords
register
controller
automatic
polarized relay
over
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
GB780725A
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.)
Automatic Telephone Manufacturing Co Ltd
Original Assignee
Automatic Telephone Manufacturing Co Ltd
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
Priority claimed from GB73/24A external-priority patent/GB233007A/en
Application filed by Automatic Telephone Manufacturing Co Ltd filed Critical Automatic Telephone Manufacturing Co Ltd
Publication of GB236497A publication Critical patent/GB236497A/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)
  • Exchange Systems With Centralized Control (AREA)

Abstract

236,497. Automatic Telephone Manufacturing Co., Ltd., and Ostline, J. E. April 1, 1924. Drawings to Specification. Automatic exchange systems.-A register sender exerts a different control according to the path over which it is taken into use. In the system described, register-controllers cf the code-translating type are divided into classes adapted to be selected in accordance with the first digit dialled, each class being multipled to a particular level of the register-controller selectors. The last choice register-controllers of the different classes are multipled to another level, two of the leads to the bank contacts being reversed, so that when a register-controller is seized over this level, a polarized relay in the register-controller responds and causes it to route the call to an operator's position. According to a further feature, the pause between successive series of impulses transmitted by a register-controller may be made dependent upon the reception in certain circumstances of a distinctive current indicating that the appropriate connecting switch is ready to receive the next series of impulses. When a hunting switch interposed between two numerical switches is taken into use, the current over the talking wires is reversed and a polarized relay in the register-controller pulls up and prevents the transmission of the next impulse series until a numerical switch is seized and the current restored to its original direction. The same polarized relay in the register-controller is utilized in carrying out both features of the invention. The register-controller is so arranged that by a simple manual switching operation it may be converted for use in a system employing either two or three digits for the exchange name. The system described is identical with part of the network described in Specification 233,007 which claims other features. Specifications 200,484 and 233,643 also are referred to.
GB780725A 1924-01-01 1924-04-01 Improvements in or relating to automatic or semi-automatic telephone systems Expired GB236497A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB73/24A GB233007A (en) 1924-01-01 1924-01-01 Improvements in or relating to automatic or semi-automatic telephone systems

Publications (1)

Publication Number Publication Date
GB236497A true GB236497A (en) 1925-07-01

Family

ID=9697916

Family Applications (1)

Application Number Title Priority Date Filing Date
GB780725A Expired GB236497A (en) 1924-01-01 1924-04-01 Improvements in or relating to automatic or semi-automatic telephone systems

Country Status (2)

Country Link
FR (2) FR594338A (en)
GB (1) GB236497A (en)

Also Published As

Publication number Publication date
FR31176E (en) 1927-01-26
FR594338A (en) 1925-09-10

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