US2629019A - Selector marking system - Google Patents

Selector marking system Download PDF

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Publication number
US2629019A
US2629019A US90164A US9016449A US2629019A US 2629019 A US2629019 A US 2629019A US 90164 A US90164 A US 90164A US 9016449 A US9016449 A US 9016449A US 2629019 A US2629019 A US 2629019A
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United States
Prior art keywords
selectors
lines
selector
group
bundle
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 - Lifetime
Application number
US90164A
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English (en)
Inventor
Lesigne Henri Louis
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.)
Compagnie Industrielle des Telephones SA
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Compagnie Industrielle des Telephones SA
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Filing date
Publication date
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Publication of US2629019A publication Critical patent/US2629019A/en
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Expired - Lifetime legal-status Critical Current

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    • 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

Definitions

  • This invention relates to the selection of the out lines in an automatic-switching exchange.
  • the switching networks comprising several exchanges
  • these are connected together by bundles of lines whose installation is expensive and of which the highest possible efficiency should be obtained.
  • the efiiciency increases at the same time as the number of the lines of .the bundle if these lines, the number oi which is determined by the number of the calls to be transmitted, constitute a single perfect group, that is, a group wholly available to each of the selecting units; if the bundle consists of several line groups the highest possible eiiiciency is no longer reached.
  • This invention allows of constituting out lines in a single Iperfect group and to thus obtain the highest efficiency from the bundles. It is applicable where .the selection takes place by means of rst group selectors and second group selectors, a first plurality of which gives access to some directions and a second plurality of which gives access to other directions, and where a single marking wire is multipled on registers at one of its extremities and on selectors at its other g extremity so as to permit the orientation of the selectors from the registers.
  • rst group selectors and second group selectors a first plurality of which gives access to some directions and a second plurality of which gives access to other directions
  • a single marking wire is multipled on registers at one of its extremities and on selectors at its other g extremity so as to permit the orientation of the selectors from the registers.
  • the lines which constitute a bundle for at least one direction are distributed over both pluralities of second group selectors but nevertheless remain all simultaneously accessible through the medium of the marking wire; the latter provides at all times for the orientation of the selectors exclusively towards the devices connected to free lines.
  • the accompanying figure which represents by way of example an embodiment of the invention, shows the line of a calling subscriber I having access to three line bundles I0, I3, I5 corresponding to different directions by means of a circuit of connection 3 comprising a line under 2 and a iirst group selector 4 which itself gives access to two second group selectors I and 8 whose connecting relays are shown at 2'I and 23 respectively.
  • the equipments of the line bundles I0 and I5 are shown at 9 and lll respectively; it is furthermore assumed that the bundle I3 is divided into two line groups, whose equipment II and I2 are connected to fthe selectors 'l and 8 respectively.
  • the line groups themselves will be designated by references I I and I2 in the following.
  • the word equipment is here intended to mean the assembly of the terminals (line, control and test) of the diierent second group selectors on which each line is multipled.
  • each of the lines of the line bundle I0 which lead to the same direction is multipled to a contact of a plurality of selectors I similar to the single selector 1 diagrammatically shown so that any of these lines is accessible over any one of these selectors 'I.
  • Each of the lines of the line bundle I5 which lead to another direction is similarly multipled to a contact of a plurality of selectors 8.
  • the wiper of each of selectors 'I and 8 is similarly multipled to a contact of a plurality of first .group selectors 4 similar to the single first group selector II which has been represented, so that any selector 'I or 8 is accessible over any one of the selectors 4 to one contact of which it is multipled.
  • Two busy relays I 6 and I'I control the line groups I2 and II respectively.
  • Relays I6 and Il operate when all lines of groups I2 and II respectively are busy.
  • a suitable conventional arrangement consists in mounting a relay on each trunk and in connecting in series one contact of all relays so. as toclose a circuit when all trunks are simultaneously busy. Such an arrangement is for example described in Telephony by Atkinson, London 1948, page 239, under the heading Group Engaged Tone and illustrated in Fig.
  • the register 6 When the subscriber calls for direction IB, the register 6 orients a selector 4 through the wire 24 on a selector 1, then it orients the latter selector through the wire 24 on one line of the bundle I0; again, for 4direction I5, a selector 4 is oriented through the wire 22 on a selector 8, and the latter is itself oriented on a line of .the
  • the selector 4 is oriented through -L the wire 23 and may stop on any one of selectors 'I and ⁇ 8 if both line groups II and I2 0i bundle I3 have lines free, because the wire 23 is connected either .by the contact I8 and the element 20. or lby the contact I9 and the elementZI,
  • the register then orients the selector 'I or the selector 8 on any of the lines of groups I0 and II or I5 and I2 respectively; if all the lines of group II are busy, relay I'I opens I9 and the l selector 4 can no longer be connected with the selectors 1, whereas lthe selectors 8 remain accessible to it, owing to the contact I8 held closed.
  • the Contact I9 has no influence on the wires 22 and 24; it prohibits the acces-s to the selectors 'i only for the communications towards the bundle I3; these devices however remain accessible for the calls towards the bundle I0.
  • V The advantageous results of the invention reside in the fact that a selector such as 4 can provide for the transmission of the communication designed for a bundle such as I3 in the same conditions as if it had on its bank of contact studs all the lines of the bundle I3 in a single perfect group. The risk thus disappears of seeing the selection take a way ywithout any irnmediate outlet, while the -communication is possible through another way.
  • the applications of this invention may be extended to all systems in which it may be advantageous to avoid the overcharge of the devices through communication overloads: the automatic control is here achieved by the control yon the line bundles.
  • Telecommunication switching system for trunking the outgoing communications from a telecommunication exchange comprising rst group selectors, a first plurality of second group selectors, a second plurality of second group selectors, a rst and a second plurality of outgoing lines each o1" which is multipled to a position of each selector of said first plurality of second group selectors, a third and a fourth plurality of outgoing lines each of which is multipled to a position of each selector of said second plurality of second group selectors, a marking wire dividing into a rst ybranch multipled on those positions of said ⁇ first group selectors which give access to said :First plurality of said second group selectors, a second branch multipled on those positions of said rst group selectors which give access to said second plurality of said second group selec-tors, a third branch multipled to those positions of said iirst plurality of said second group selectors .to which

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
US90164A 1948-04-28 1949-04-28 Selector marking system Expired - Lifetime US2629019A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1008571T 1948-04-28

Publications (1)

Publication Number Publication Date
US2629019A true US2629019A (en) 1953-02-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
US90164A Expired - Lifetime US2629019A (en) 1948-04-28 1949-04-28 Selector marking system

Country Status (5)

Country Link
US (1) US2629019A (fr)
CH (1) CH287723A (fr)
FR (1) FR1008571A (fr)
GB (1) GB672149A (fr)
NL (1) NL141976B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2727095A (en) * 1951-04-19 1955-12-13 Mercer Richard Telecommunication systems
US2741663A (en) * 1950-06-16 1956-04-10 Nederlanden Staat Automatic switching system
DE958662C (de) * 1954-07-06 1957-02-21 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur Auswahl groesserer Leitungsbuendel in Fernsprechanlagen mit Waehlerbetrieb
US2787661A (en) * 1951-08-04 1957-04-02 Philips Corp Circuit for use in automatic signalling systems
US2885480A (en) * 1942-10-31 1959-05-05 Staat Der Nederlanden Ten Dze Relay register
US2909610A (en) * 1952-03-21 1959-10-20 Ericsson Telefon Ab L M Group selector device
US2993093A (en) * 1958-04-15 1961-07-18 Siemens Ag Electronic routing selector for communication systems
US3035124A (en) * 1956-07-16 1962-05-15 Siemens And Halske Ag Berlin A Electronic switching in signalling systems

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1559736A (en) * 1923-05-17 1925-11-03 Automatic Electric Co Secondary trunking system
US1900969A (en) * 1930-05-13 1933-03-14 Int Standard Electric Corp Automatic or semiautomatic telephone exchange system
US2030412A (en) * 1934-10-24 1936-02-11 Bell Telephone Labor Inc Telephone exchange system
US2137422A (en) * 1934-11-03 1938-11-22 Ass Telephone & Telegraph Co Automatic switch
US2138594A (en) * 1935-01-18 1938-11-29 Western Electric Co Telephone system
US2217084A (en) * 1937-02-24 1940-10-08 Siemens Ag Telephone system
US2421919A (en) * 1944-04-29 1947-06-10 American Telephone & Telegraph Telephone routing system
US2431313A (en) * 1941-07-11 1947-11-25 Int Standard Electric Corp Alternative routing telephone system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1559736A (en) * 1923-05-17 1925-11-03 Automatic Electric Co Secondary trunking system
US1900969A (en) * 1930-05-13 1933-03-14 Int Standard Electric Corp Automatic or semiautomatic telephone exchange system
US2030412A (en) * 1934-10-24 1936-02-11 Bell Telephone Labor Inc Telephone exchange system
US2137422A (en) * 1934-11-03 1938-11-22 Ass Telephone & Telegraph Co Automatic switch
US2138594A (en) * 1935-01-18 1938-11-29 Western Electric Co Telephone system
US2217084A (en) * 1937-02-24 1940-10-08 Siemens Ag Telephone system
US2431313A (en) * 1941-07-11 1947-11-25 Int Standard Electric Corp Alternative routing telephone system
US2421919A (en) * 1944-04-29 1947-06-10 American Telephone & Telegraph Telephone routing system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885480A (en) * 1942-10-31 1959-05-05 Staat Der Nederlanden Ten Dze Relay register
US2741663A (en) * 1950-06-16 1956-04-10 Nederlanden Staat Automatic switching system
US2727095A (en) * 1951-04-19 1955-12-13 Mercer Richard Telecommunication systems
US2787661A (en) * 1951-08-04 1957-04-02 Philips Corp Circuit for use in automatic signalling systems
US2909610A (en) * 1952-03-21 1959-10-20 Ericsson Telefon Ab L M Group selector device
DE958662C (de) * 1954-07-06 1957-02-21 Telefonbau & Normalzeit Gmbh Schaltungsanordnung zur Auswahl groesserer Leitungsbuendel in Fernsprechanlagen mit Waehlerbetrieb
US3035124A (en) * 1956-07-16 1962-05-15 Siemens And Halske Ag Berlin A Electronic switching in signalling systems
US2993093A (en) * 1958-04-15 1961-07-18 Siemens Ag Electronic routing selector for communication systems

Also Published As

Publication number Publication date
CH287723A (fr) 1952-12-15
GB672149A (en) 1952-05-14
FR1008571A (fr) 1952-05-19
NL141976B (nl)

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