DK141350B

DK141350B - CONNECTING TO TELECOMMUNICATION DISTRIBUTION NETWORK ISAER TELEFORM DISTRIBUTION NETWORK WITH DATA TRANSFER DEVICES FOR EXCHANGE OF GOVERNMENT INFORMATION

Info

Publication number: DK141350B
Application number: DK115475A
Authority: DK
Inventors: D Finkhaeuser; Liegsalz; W Meyer
Original assignee: Siemens Ag
Priority date: 1974-03-21
Filing date: 1975-03-20
Publication date: 1980-02-25
Also published as: BE826991A; NL170077B; DE2413740A1; FR2265238A1; NL7503095A; DK115475A; IT1034360B; NL170077C; FR2265238B1; GB1495341A; DK141350C; DE2413740B1

Description

141350 i141350 i

Opfindelsen angår en kobling til telekommunikationsformidlingsnet, især telefonformidlingsnet, hvori flere ligeberettigede formidlingssteder er indbyrdes forbundet over bundter af informationskanaler, hvorved en 5 af informationskanalerne inden for hvert bundt valgfrit kan sammenkobles ved begge ender med dataoverføringsindretninger (modemapparater) og benyttes som datakanal til udveksling af styreinformationer, idet der ved tilslutningen af et modemapparat til en fri informationskanal i et 10 af de to over et bundt med hinanden forbundne formidlingssteder udsendes et belægningssignal til det andet formidlingssted, san i tilfælde af en manglende datakanal bedømmes som tilkoblingsanmodning for et modemapparat, og hvorved der er tildelt de to over et bundt af informationskanaler 15 med hinanden forbundne formidlingssteder forskellige prioriteter.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a telecommunication network connection, in particular telephone switching networks, in which multiple equal communication sites are interconnected over bundles of information channels, whereby one of the information channels within each bundle can be optionally interconnected at both ends with data transfer devices (modem devices) wherein, upon connecting a modem apparatus to a free information channel in one of the two interconnected switching locations, a coating signal is transmitted to the second switching location, which in the case of a missing data channel is judged as a connection request for a modem apparatus, and thereby For example, the two are assigned different priorities over a bundle of information channels 15 interconnected.

I en sådan fra det tyske offentliggørelsesskrift nr. 22.23.364 kendt kobling styres raodemapparaternes tilkobling til en fri overføringskanal alene af ophævelsen 20 af en belægning. Ved sådanne indretninger med forskellige prioriteter ved de to ender af et bundt informationskanaler kan derfor modemapparatet i formidlingsstedet med den laveste prioritet tilkobles og styre oprettelsen af en datakanal, således at en og den samme overføringskanal 25 kan belægges fra begge ender trods de forskellige prioriteter. I dette tilfælde trækker det ene formidlingssted belægningen tilbage. Dette betyder unødvendige koblingsprocesser og dermed ekstra tid.In such a coupling known from the German publication specification No. 22.23.364, the connection of the radiators to a free transmission channel is governed solely by the removal of a coating. Therefore, with such devices having different priorities at the two ends of a bundle of information channels, the modem apparatus in the lowest priority switching location can be connected and control the creation of a data channel so that one and the same transmission channel 25 can be coated from both ends despite the different priorities. In this case, the one intermediary site withdraws the coating. This means unnecessary switching processes and thus extra time.

Opfindelsen tager sigte på i sådanne koblinger 30 at styre modemapparatemes tilknytning til de enkelte informationskanaler på en enkel, men alligevel sikker måde.It is an object of the invention to control in such couplings 30 the connection of the modem devices to the individual information channels in a simple, yet secure manner.

Dette opnås ifølge opfindelsen ved, at et modemapparat i formidlingsstedet med højeste prioritet altid kobles til en informationskanal, såsnart en informationskanal er 35 fri, og der i bundtet endnu ikke drives nogen informationskanal som datakanal, mens der i det som det andet formidlingssted til bundtet tilsluttede formidlingssted med lavere prioritet altid først efter modtagelse af en 2 141350 tilslutningsanmodning sker tilkobling af et modemapparat til den udvalgte informationskanal i dette bundt.This is achieved according to the invention in that a modem device in the transmission site with the highest priority is always connected to an information channel as soon as an information channel is free, and in the bundle no information channel is operated as a data channel, while in the second communication location the bundle is connected. a lower priority switching point always only after receiving a 2 141350 connection request, a modem device is connected to the selected information channel in this bundle.

Ved opfindelsen undgås, de ovenfor nævnte ulemper, da tilkoblingen af et modemapparat altid kun kan udgå fra 5 ét formidlingssted, nemlig det med højeste prioritet. For at formidlingsstedet med laveste prioritet alligevel så tidligt som muligt skal være i stand til at etablere et forbindelsesønske eller lignende, oprettes der en fra formidlingsstedet med højeste prioritet udgående data-10 kanal, såsnart der i bundtet er en informationskanal fri. Resultatet er altså, at styringen af modemapparatets tilkobling altid entydig sker fra én ende og ikke afhænger af, hvilken overvågningskobling, der reagerer hurtigst ved frigivelse af en overføringskanal. Endvidere bort-15 falder unødvendige kobleprocesser, der består i, at et allerede tilkoblet modemapparat ved manglende prioritet atter må frakobles.In the invention, the above-mentioned disadvantages are avoided, since the connection of a modem device can always be based on only one transmission point, namely the highest priority. However, in order for the lowest priority intermediary to be able to establish a connection request as early as possible, a data channel exiting the highest priority intermediary site is created as soon as an information channel is free in the bundle. The result is that the control of the modem device's connection always takes place unequivocally from one end and does not depend on which monitoring coupler responds the fastest when releasing a transmission channel. Furthermore, unnecessary switching processes, which consist of a previously switched modem device, must be switched off again in the absence of priority.

Som det fremgår af foranstående, opnås der med den foreliggende opfindelse en hurtig kobling, fordi der 20 - i langt de fleste tilfælde - allerede står en datakanal klar, når der fremkommer ønske om dataoverføring, idet en sådan datakanal oprettes, så snart der er en ledig informationskanal i ledningsbundtet. Endvidere kan koblingen være enkel, fordi der ikke kræves særlige koblings-25 midler til at styre koblingsprocessen ved forsøg på samtidig belægning fra begge ender.As can be seen from the foregoing, the present invention achieves a quick coupling because, in the vast majority of cases, a data channel is already ready when a desire for data transmission arises, such data channel being created as soon as there is a data channel. free information channel in the management bundle. Furthermore, the coupling can be simple because no special coupling means are required to control the coupling process by attempting simultaneous coating from both ends.

Prioriteterne for formidlingsstederne kan på enkel og fordelagtig måde afledes fra de løbenumre, som er tilknyttet disse, hvorved formidlingsstedet med det hø-30 jeste eller med det laveste løbenummer har forret i forhold til formidlingsstedet med det laveste eller højeste løbenummer.The priorities for the intermediary sites can be deduced in a simple and advantageous manner from the serial numbers associated with these, whereby the intermediate location with the highest or lowest serial number has precedence over the intermediate location with the lowest or highest serial number.

Den nye løsning gør det på enkel måde muligt at gennemføre halvdupleksdrift, når der med igangsættelse 35 af en datakanal og begyndende med formidlingsstedet med den højeste prioritet fortløbende mellem de to tilsluttede formidlingssteder udveksles informationer, som overfører sendeberettigelsen til det respektive andet formid- 3 141350 lingssted. Den fastlagte prioritet for modemtilkoblingen kan altså i givet tilfælde benyttes til den første tildeling af sendeberettigelsen, således at der kan undgås en samtidig datatransport i modgående retninger.The new solution makes it possible to carry out half-duplex operation in a simple way when, starting with 35 a data channel and starting with the highest priority communication point between the two connected communication points, information transmitting the transmitting eligibility to the respective second communication point is exchanged. . The given priority for the modem connection can thus be used in the given case for the first allocation of the transmission eligibility, so that simultaneous data transport in opposite directions can be avoided.

5 Opfindelsen forklares i det følgende nærmere på grundlag af et udførelseseksempel under henvisning til tegningen, idet fig. 1 viser et blokdiagram over et telefonformidlingsnet og 10 fig. 2 forbindelsen mellem to formidlingssteder i et sådant telefonformidlingsnet over et bundt af informationskanaler .The invention will now be explained in more detail on the basis of an exemplary embodiment with reference to the drawing, in which: FIG. 1 is a block diagram of a telephone transmission network and FIG. 2 shows the connection between two switching points in such a telephone switching network over a bundle of information channels.

Det i fig. 1 viste ikke hierarkisk inddelte telekommunikationsnet har ni formidlingssteder A til J.The FIG. 1, nine hierarchically divided telecommunications networks have nine communication points A to J.

15 Disse formidlingssteder er indbyrdes forbundet over enkelte forbindelsesveje. Disse forbindelsesveje kan være normale fprbindelsesledninger eller -kabler, samt være dannet af radiostrækninger. Over de pågældende forbindelsesveje overføres signaler ifølge rummultlpleke-, fre-20 kvensmultipleks eller tidsmultipleksprincippet, hvorved de enkelte forbindelsesveje i reglen har et flertal af informationskanaler. Ved de enkelte formidlingssteder i telekcnraminikationsnettet er tilsluttet abonnentpladser, af hvilke der på tegningen kun er vist to abonnentpladser, 25 nemlig abonnentpladsen 567 i formidlingsstedet A og abon-nentpladsen 890 i formidlingsstedet J.15 These intermediary sites are interconnected over individual connection paths. These connection paths can be normal connection lines or cables, as well as formed by radio lines. Signals are transmitted over the respective communication paths according to the space multiplex, frequency multiplex or time multiplex principle, whereby the individual communication paths usually have a plurality of information channels. Subscriber locations are connected to the individual switching locations in the telecommunication network, of which only two subscriber locations are shown in the drawing, namely the subscriber space 567 in the switching location A and the subscriber space 890 in the switching location J.

Af hensyn til opfindelsens forklaring antages, at der til de to ender af hver forbindelsesvej knyttes forskellige prioriteter, hvorved den ende, som har forret, 30 er betegnet med et p. I det foreliggende tilfælde blev prioritetsfordelingen afledt fra den alfabetiske rækkefølge. I stedet for kan der også anvendes løbenumre, som er knyttet til de enkelte formidlingssteder, hvorved formidlingsstedet med det højere eller med det lavere løbe-35 nummer har forret over for formidlingsstedet med det lavere eller højere løbenummer. Den rigtige prioritet kan automatisk udledes gennem simpel sammenligning af eget løbenummer med løbenummeret af det formidlingssted, som 141350 4 kan nås over et bundt. Da prioritetsfordelingen altid henviser til de over en forbindelsesvej med hinanden forbundne to formidlingssteder, har de ved et formidlingssted tilsluttede forbindelsesveje i reglen ikke den samme for-5 ret. Med hensyn til det udvalgte udførelseseksempel afviger kun to formidlingssteder fra denne regel, nemlig formidlingsstedet A, som har forret for begge tilsluttede forbindelsesveje, og formidlingsstedet J, som ikke har nogen forret for de to tilsluttede forbindelsesveje.For the sake of explanation of the invention, it is assumed that different priorities are attached to the two ends of each connecting path, whereby the end which has the precursor 30 is denoted by a p. In the present case, the priority distribution was derived from the alphabetical order. Instead, serial numbers may be used which are associated with the individual intermediary sites, whereby the intermediate location with the higher or lower serial number has precedence over the intermediate location with the lower or higher serial number. The right priority can be deduced automatically by simply comparing your own serial number with the serial number of the intermediary that can be reached over a bundle. Since the priority distribution always refers to the two communication points connected over one interconnection path, the connection paths connected at one interconnection point generally do not have the same business. With respect to the selected embodiment, only two switching sites depart from this rule, namely the switching location A, which has the precursor for both connected communication paths, and the switching point J, which has no precursor for the two connected connecting paths.

10 Fig. 2 viser enkeltheder ved en forbindelsesvej mellem to formidlingssteder, f.eks. A og B ifølge telekommunikationsnettet i fig. 1. Således består forbindelsesvejen af et ledningsbundt, hvorved der findes en ledning til hver informationskanal. For nemheds skyld er der 15 kun vist fire informationskanaler NI til N4. Alle informationskanaler er på begge sider ved hjælp af tilslutningskoblinger AS forbundet med indgangen på et i omgruppering udført koblenetværk Kl eller K2. På samme måde er abonnentpladser og også dataoverføringsindretninger Mil 20 til M23 forbundet med koblenetværket. Sammenkoblingen af de enkelte koblenetværksindgange i koblenetværket styres på en i og for sig kendt måde ved hjælp af indstillingsindretninger henholdsvis El og E2 i forbindelse med en o-verordnet centralstyring henholdsvis ZST1 og ZST2. Cen-25 tralstyringen ZST beskæftiger sig derudover med alle styreforløb inden for et formidlingssted og i forbindelse med tilsluttede formidlingssteder.FIG. 2 shows details of a connection path between two mediation sites, e.g. A and B according to the telecommunications network of FIG. 1. Thus, the connection path consists of a cord bundle, whereby a cord is provided for each information channel. For your convenience, only four information channels NI to N4 are shown. All information channels are connected to the input on a switching network K1 or K2 on both sides by means of connection links AS. Similarly, subscriber locations and also data transmission devices Mil 20 to M23 are connected to the switching network. The interconnection of the individual switching network inputs in the switching network is controlled in a manner known per se by means of setting devices E1 and E2, respectively, in connection with an o-ordered central control ZST1 and ZST2 respectively. In addition, the central control unit ZST deals with all control processes within a switching location and in connection with connected switching locations.

Af de viste informationskanaler kan én inden for •.-et bundt--tjene soiri datakanal til udveksling' af styreinfor-30 mationer,- hvorved- et af modemapparaterne M... tilsluttes ved hver ende.- Dé i- fig-, 2 viste modemapparater til-data-overføringen· er -midlertidigt knyttet til ledningsbundter-*ne, så at et modemapparat, som der i øjeblikket ikke er brug -for, kan-benyttes ved bortfald af et modemapparåt.Of the information channels shown, one can within a bundle - serve as a data channel for exchange of control information - whereby the modem devices M ... are connected at each end. However, the modem devices shown for the data transfer are attached to the wiring harnesses so that a modem device which is not currently needed can be used in the event of a modem device failure.

35 · . Under den normale drift er en af de forhånden værende informationskanaler kontinuerligt koblet som datakanal,. således at en dataoverføring er mulig f.eks. fra modemapparatet Mil over informationskanalen Ni til modem- 5 141350 apparatet M21 og omvendt. Alle øvrige kanaler står til rådighed for individuelle forbindelser mellem abonnenter i telekommunikationsnettet. Hvis der opstår yderligere behov for en forbindelse mellem abonnenter, afbrydes da-5 takanalen og frigives ligeledes til disse formål. En opbygning af yderligere éibonnentindividuelle forbindelser over det forhåndenværende bundt er således ikke mere mulig.35 ·. During normal operation, one of the pre-existing information channels is continuously connected as a data channel. so that a data transfer is possible e.g. from the modem apparatus Mil over the information channel Ni to the modem apparatus M21 and vice versa. All other channels are available for individual connections between subscribers in the telecommunications network. If there is a further need for a connection between subscribers, the data channel is disconnected and also released for these purposes. Thus, building up further individual connections over the existing bundle is no longer possible.

Bliver en af informationskanalerne N... efter en 10 sådan driftstilstand igen fri, hvilket erkendes blandt andet også i formidlingsstedet A ved hjælp af overvågningen af tilslutningskoblingerne AS af centralstyringen ZTS, så bliver på grund af forretten et frit modemapparat M... først belagt fra centralstyringen og dette gennem-15 koblet over koblenetværket Kl til tilslutningskoblingen AS for den frie informationskanal, f.eks. NI. Derefter sendes et belægningssignal til det andet formidlingssted B over den således belagte informationskanal. Da alle tilslutningskoblinger AS også her gennemprøves kontinuerligt,If one of the information channels N ... becomes free again after such an operating state, which is recognized, among other things, also in the switching point A by monitoring the connection connections AS of the central control ZTS, then a free modem device M ... is first coated. from the central control and this connected through the switching network K1 to the connection connection AS for the free information channel, e.g. NINE. Then, a coating signal is sent to the second intermediate site B over the information channel thus coated. Since all connection connections AS are also continuously tested here,

20 erkender centralstyringen ZST2 belægningen af informationskanalen NI fra formidlingsstedet A. Centralstyringen undersøger derpå, om der allerede består en dataforbindelse til formidlingsstedet A. Hvis denne undersøgelse som i det foreliggende tilfælde giver et negativt resul-25 tat, så frembringer centralstyringen ZST2 en forbindelse mellem den belagte tilslutningskobling AS og, f^^fr^t^^-demapparat, f.eks. M21, over koblenetværket K2. Dermed er datakanalen gennemkoblet/ tivilket kvitteres ved en til-bagarftefding'tf'f "Éor^d£iAgs^€éåét 'Af $Svéksfirigen af data 30 éllér Jstyféinf0rmatidner kan'ftu ‘for^agés på kenåt måitéV20, the central control ZST2 recognizes the occupancy of the information channel N1 from the switching point A. The central control then examines whether a data connection already exists to the switching point A. If, as in the present case, this study gives a negative result, then the central control ZST2 produces a connection between the coated connection connector AS and, f ^^ fr ^ t ^^ demo apparatus, e.g. M21, over the switching network K2. Thus, the data channel is diverted / acknowledged by a backfill of the date "By $ the fraud of data 30 or more Jstyféinf0rmatidner can'ftu" for ^ agés in kenaat measure

.........^’frå grundfag åf L’dé forud "gfrae J^rioritétéir bf' ^ den dérmied forbundne forret’af ‘én "åf ae'to "over ét‘bundt......... ^ 'from the basic subject of Lludeé prior to the "giore Jorioritétéir bf" ^ the related business of' one 'of ae'to' over one bundle

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af infomåfidhskånåléf' indbyrdes forbundne fofmidlihgs- ‘ steder / i:kah" opbygningen "åi 'da€akahaie^Gkun Ike ‘frå?def 35 ‘privilegerede ‘formiåi’ingsstedV frémlffflihgéri åf en ^sf-"' dån datakanal skér"så imiddeibårf altid/* når' eri åi ihiof-mationskanalérné bliver' fri/ og "'dér 'endnu ikke Déstar nogen datålofbindéise. Cfssé béfihgéfséf'kan overvåges gen-,, i;;·;';· i hlNpo:! ·::νήη:;. jpb i i :r ί.β;·ϊ'\ί scpm. ηρκί-χί ;ib sobnesof infomafidhskånåléf 'interconnected fofmidlihgs-' places / i: kah "structure" åi 'da € akahaie ^ Gkun Ike' from? def 35 'privileged' formi'ing placeV frémlffflihgéri on a ^ sf- "'then the data channel cut" / * when 'eri ii ihiof-mationchannelérné becomes' free / and '' there ', Déstar does not yet have any data binding. Cfssé béfihgéfséf'can be monitored again- ,, i ;; ·;'; · i hlNpo:! · :: νήη: ; jpb ii: r ί.β; · ϊ '\ ί scpm. ηρκί-χί; ib sobnes

Claims

141350 neiit the respective central control ZST in simple way. Ratio of these conditions ensures that only one data channel is built up and that, for the second dissemination point, it is immediately possible to determine which information channel is to be used as a data channel. Simultaneous modem connections at both ends of an information channel and associated control problems are avoided. Thereby, no damage is done to the respective second dissemination site, since a data channel is immediately built up when a free information channel is found, and the other mediation site can also output its data. The exchange of the individual data and control information between the two modems connected to an information channel, e.g. Mil and M21, can be done in and for 15 known ways. It is advantageous to use a half-duplex operation in which the transmitting unit is alternately always assigned only one intermediate location so as to prevent a simultaneous transmission start from both ends. In order to obtain the first precursor, the present priority distribution can then be used in the same way between the interconnected switching sites, with messages being exchanged, starting with a data channel and beginning with the privileged switching location, between the two connected switching locations. 25 which transfers the transmitter to the respective other intermediary.

1. Connection to telecommunications networks, in particular telephone networks, wherein several equally transmitted sites are interlinked across bundles of information channels, whereby one of the information channels within each bundle can be optionally interconnected at both ends with data transfer devices (modem devices) and used as data exchange 35 control information, upon connecting a modem apparatus to a free information channel in one of the two above a bundle of interconnected transmission sites, a coating signal is transmitted to the other communication site,