US1972199A - Telephone installation - Google Patents

Telephone installation Download PDF

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Publication number
US1972199A
US1972199A US656731A US65673133A US1972199A US 1972199 A US1972199 A US 1972199A US 656731 A US656731 A US 656731A US 65673133 A US65673133 A US 65673133A US 1972199 A US1972199 A US 1972199A
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Prior art keywords
groups
lines
selectors
group
sub
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Expired - Lifetime
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US656731A
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English (en)
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Merk Friedrich
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Individual
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Individual
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/64—Distributing or queueing
    • H04Q3/68—Grouping or interlacing selector groups or stages
    • 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

  • the invention relates to telephonic selectors for groups of subscriber's lines and aims toprovide an improved selector arrangementor means and principle of making connections. 7
  • Such groups are characterized bye very unequal ratio of the subscribers lines to the. connecting lines associated with them. The ratio is very disproportionate because the use of the subscribers lines is small and cannot be increased, whereas the connecting lines should be used ,as much as possible in so far as the-presence of .a larger number of subscribers lines allows it. This requirement is satisfied if the. ratio of the subscribers lines to the connecting linesassociated with them is about 100 to 5 for ordinary traffic and about 100 to 9 for heavy traflic.
  • V Selector devices for subscriber groups have hitherto been of two difierent or what might be called opposite constructions.
  • the devices for the outgoing and incoming-traffic to and from subscribers are made as small but very numerous selectors, whereas in the other case, for the same purpose, considerably fewer, but very large and costly selectors are used. In so far as in this way the said ratio is satisfied, the result is only less economical than it is eflicient.
  • the object of the invention is a technical and economical and, atthe same time,- satisfactory construction and arrangement of the-selector device for subscriber groups. This is brought about by, a multiple connection arrangement'in which however, if desired, suitable also for pre-selectors together with a staggering of some of the selectable lines. In any case, with the connection-aris to say, withoutadditional distributing switches.
  • connection arrangement is mainly intended for use in call seekers and line selectors; It is rangement, an eificiency is obtained which allows a grouping together of the lines in the ratio men-. tioned at the beginning to be obtained directly in the multiple having selectorsof medium size, that obtained together with another big advantage which consists in that the connection arrangement can also be used for line selectors and-can itself be .easily inserted-in selector systems :with subscribers lines divided into groups of ten. Altogether, the inyention'makes it possible to restrict the selectors for the incoming and outgoing subscriber trailic to approximately the same small number that has already beenobtained in the switchingstep of the selector groups in a differentv connection arrangement.
  • a selector suitably adapted 'or adaptable to the purpose is, shown for example-in my prior Patent -No.11,912,(l87 dated ' MaySO, 1933, referring particularly'to Figs. 1 andS.
  • the invention will be best understood'by further description withreference to the, attached draws: ings illustrating the same diagrammatically.
  • FIG. 1 represents several groups of selectable; lines as connecting with associated, groups ofv selecting lines;- 1 .
  • Fig. 1a represents a reverseconnectingarrange-:-
  • Fig. 2 represents an arrangementwherein thev selectable lines are divided into sub-groups;
  • Fig. Zare presents a reverse switching arrangement of-this sub-group division;
  • Figs. 3 and 3a illustrate the. above mentioned arrangement for a larger number of. selector,
  • FIG. 4 represents an improved fOIlIl'Of connec-: tion arrangement for a multiple of 'linesin accord: ance with the principleinvolved;
  • Q I Fig. 4a illustrates a modification of the'latter andexemplifiesa practicable table of symbols advantageously used;
  • Fig. 5 illustrates an adaptation of the ccnnec-.; tions of the preceding figure with only five groups of selectors,'together'with a table;
  • Fig. 6 exemplifies possible combinations of the table symbols
  • Fig. '7 exemplifies variations of the table of Fig. 6;
  • Fig. 8 is a further illustration of the table use.
  • the lines A, B and C indicate three groups of subscribers lines which cyclically connect together any two partial multiples marked with small circles I, II of three call seeking groups.
  • the lines a, b, 0, indicate three groups of connecting lines to which are connected the call seeking groups indicated by arrows.
  • the arrow-heads give the engaging position of the call seeker.
  • selectors with a zero position are assumed, so that the arrowheads indicate, at the same time, the sequence for the covering of the partial multiplesI andII lying one below the other.
  • each of these groups in one of the call seeking groups appears in the partial multiple I and in the other in the partial multiple II
  • the calls from any subscriber group can thus be made from any two groups of call seekers,
  • the calls, for example, from the subscriber group A can be made from the (appropriate) call seeking group a until all call seekers in this group are occupied.
  • the call seeking group b can thus obtain the desired assistancebecause the subscribers of the group B can obtain any necesany assistance from the call seeking group 0.
  • the subscriber group, B would no longer be able to deal with a call'during the occupancy of thetwo' call seeking groups a and b.
  • the multiple of the call seeking groups a and I would, in this case be a usual restricted multiple of the line groups A and B, which does not fall within the scope otthe invention.
  • the partial multiples I, II are also divided up into sub-groups.
  • the several arrows branching from the connecting lines a, b, 0, represent the sets of brushes of the call seekers in the form of multiple brush selectors or of small call seekers connected in parallel, both of which arein themselvesknown.
  • the brush set of a call seeker of the particular sub-group appertaining to the appropriate call should always, in any case, be efiective.
  • theswitch device operates as regards the use of the connecting lines a, b, c, similarly to that of Figure 1,- that is to say, the use of the connecting lines will in this case not be influenced by the divisionof the subscriber lines into sub- A1-to.A4, B1 to B4, C1 to C4 indicate sub-groups of preselectors, to which corresponds the multiple of Figure, 1a, and thus has likewise the same Figures 8 and 3a illustrate the or the above mentioned switch arrang'ernenttora larger num: ber of groups of selectors and lines, the' increase of which enlarges theefllciencyof the connection arrangement.- Ifit'is-assumedin Figure that there are again five call seekers inthe subscriber groups, twenty calls are now possiblesimiih tane'ous'ly in three neighbouring subscriber groups, namely, ror example, ten calls in the sub: scriber groups A1 to A4 which are made'through the call-seekers of the groups
  • connection arrangement in accorda'nce with the invention arises out of'the correspondir' 'g or identical construction or thepartial multipleS'If II of theselector groups.
  • This compensation of the connection device is also'apparent fromthe fact that no alteration'is made in [the efiiciencyii the partial multlpl'es'I, II were arranged in' lth reverse sequence in all theselector-group'sor if in Figure 3, the calls were distributed-from the sub scriber groups alternatel'y' to their owd'and to the following call seeker groupsas again'wasindicated in Figures 3o, namely withthe connecting lines of the partial multiplesI and II arranged in a mixed sequence.
  • This-form) of construction is advantageous as regards the accessibility and the utilization of the connecting lines; I
  • Figure 4 shows thisimproved form of constructionrof the connectionarrangement in accordance with-the invention forwselec'tors Swith subscriber line's-Kin the'multiple. Ifithis form of construci' tion is compared with :the corresponding one in Figure-3, itwill be seen thatthe connecting lines for the subscriber groups in the partial multiple I oflitsown selector group are unaltered whereas the conne'cting'lines inthe partial multiple II for the sub-groups of each group.
  • any sub-' scribe'r in the. subscriber-groups A1 toA4 couldcomnect to any one of the five call seekers of the group of connecting lines a and-then any .five subscribers in-each of the sub-groups A1, A2, A3 and A4,: could connect to any-of allxthecall seekers .of
  • the sloping branches of the groups of lines a, b, c, .i. may, for the moment, be imagined not to be present so that the vertically running branches within the selector groups consist merely of independent, pure line multiples. These multiples may be regarded as the first half of bundles of double the number of lines. It is known that the first half bundles of line, if they are small and, for.ex-'
  • the table in Figure 4a shows a scheme for making up the connection arrangement by a juxtaposition of the symbols of the selecting and selectable groups of lines.
  • the combinations of letters show with which selectable groups of lines theindividual sub-groups of selectors, or their leads, are related.
  • Alab indicates that the sub-selector group Al can con,-
  • selector systems 1 with decimal group sub-division. In this case,-
  • a telephone installation comprising selectors divided into groups and lines divided into groups, said lines being adapted to be reached through the selectors and the selectors of each group being provided with a contact field adapted to connect the lines of two groups of lines of equal size, two groups of lines being connected in the contact field of the selectors of one group of selectors, and each of these groups of lines being in addition connected in the contact field of the selectors of another selector group, the combination of line groups connected in the contact fields of the selectors varying from selector group to selector group.
  • a telephone installation comprising selectors divided into groups and lines divided into groups, said lines being adapted to be reached by the selectors and the selectors of each group being provided with a contact field adapted to connect the lines of two groups of lines of equal size; said contact field consisting of two partial multiple fields of equal size, the lines of a group of lines being connected in the first partial multiple field of the selectors of a group of selectors, these lines being connected in addition in the second partial multiple field of the selectors of another group of selectors and the lines of one of the second group of lines being connected in the second partial multiple field of the selectors of the first said group of selectors, these lines being in addition connected in the first partial multiple of the selectors of a third selector group.
  • a telephone installation comprising selectors divided into groups and lines divided into groups and sub-groups, said lines being adapted to be reached by said selectors, the selectors of each group being provided with a contact field adapted to connect the lines of two groups of lines of the same size; said contact field consisting of two partial multiple fields of the same size subdivided into sub-fields corresponding to the sub-groups of lines, the lines of the sub-groups of one group of lines being connected in the subfields of the first partial multiple field of the selectors of one selector group, these lines in addition being connected in the corresponding subfields of the second partial multiple field of the selectors of another group of selectors and the lines of the sub-groups of a second group of lines being connected in the sub-fields of the second 7 partial multiple of the selectors of the first said group of selectors, these lines in addition being connected in the corresponding sub-fields of the first partial multiple field of a third group of selectors.
  • a telephone installation comprising selectors divided into groups and lines divided into groups and sub-groups, said lines being adapted to be reached .by said selectors, the selectors of each group being provided with a contact field adapted to connect the lines of two groups of lines of the same size; this contact field consisting of two partial multiple fields of the same size, subdivided into sub-fields corresponding to the subgroups of the lines, the lines of the sub-groups of one group of lines being connected in the subfields of the first partial multiple field of the selectors of one group of selectors, these lines in addition being connected in the sub-fields of the second partial multiple field of the selectors of several other groups of selectors.
  • a telephone installation comprising selectors divided into groups and lines divided into groups and sub-groups, said lines being adapted to be reached by said selectors, the selectors of each group being provided with a contact field adapted to connect the lines of two groups of lines of the same size; this contact field consisting of two partial multiple fields of the same size divided into sub-fields corresponding to the sub-groups of the lines, the lines of the sub-groups of one of the first group of lines being connected in the sub-fields of the first partial multiple field of the selectors of one group of selectors, these lines in addition being connected in the sub-fields of the second partial multiple field of the selectors of several other selector groups alternately from sub-group to sub-group and in the sub-fields of the second partial multiple field of the selectors of each selector group only connected the lines of a single sub-group of this group of lines.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Keying Circuit Devices (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Telephonic Communication Services (AREA)
US656731A 1932-02-17 1933-02-14 Telephone installation Expired - Lifetime US1972199A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE413054X 1932-02-17
DEM123029D DE635919C (de) 1932-02-17 1933-02-26 Schaltungsanordnung fuer Fernsprechanlagen

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US1972199A true US1972199A (en) 1934-09-04

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US656731A Expired - Lifetime US1972199A (en) 1932-02-17 1933-02-14 Telephone installation
US712825A Expired - Lifetime US1999104A (en) 1932-02-17 1934-02-24 Telephone installation

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US712825A Expired - Lifetime US1999104A (en) 1932-02-17 1934-02-24 Telephone installation

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BE (1) BE394383A (enrdf_load_html_response)
DE (3) DE606205C (enrdf_load_html_response)
FR (2) FR750800A (enrdf_load_html_response)
GB (2) GB413054A (enrdf_load_html_response)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2866853A (en) * 1953-11-18 1958-12-30 Gen Telephone Lab Inc Rotary finder with graded multiple
US2909610A (en) * 1952-03-21 1959-10-20 Ericsson Telefon Ab L M Group selector device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE924758C (de) * 1943-08-04 1955-03-07 Siemens Ag Schaltungsanordnung zur Herstellung von Endverbindungen ueber Durch-gangsverbindungsleitungen in Fernsprechanlagen mit Waehlerbetrieb
NL164979B (nl) * 1951-10-27 Kureha Chemical Ind Co Ltd Druktoetsschakelpaneel met piezo-elektrische eenheids- elementen.
DE2724154A1 (de) * 1977-05-27 1978-11-30 Dirr Josef Schaltungsanordnung fuer vermittlungsanlagen, insbesondere fernsprechnebenstellenanlagen auf koppelpunktbasis

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2909610A (en) * 1952-03-21 1959-10-20 Ericsson Telefon Ab L M Group selector device
US2866853A (en) * 1953-11-18 1958-12-30 Gen Telephone Lab Inc Rotary finder with graded multiple

Also Published As

Publication number Publication date
US1999104A (en) 1935-04-23
DE606205C (de) 1934-11-29
FR44932E (fr) 1935-05-01
BE394383A (enrdf_load_html_response)
DE635919C (de) 1936-10-01
GB413054A (en) 1934-07-12
GB419189A (en) 1934-11-07
DE618575C (de) 1935-09-13
FR750800A (fr) 1933-08-18

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