WO2000060898A1 - Transmission of information on an isdn network - Google Patents

Transmission of information on an isdn network Download PDF

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Publication number
WO2000060898A1
WO2000060898A1 PCT/FR2000/000826 FR0000826W WO0060898A1 WO 2000060898 A1 WO2000060898 A1 WO 2000060898A1 FR 0000826 W FR0000826 W FR 0000826W WO 0060898 A1 WO0060898 A1 WO 0060898A1
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WO
WIPO (PCT)
Prior art keywords
channel
information
digital network
transmission
sub
Prior art date
Application number
PCT/FR2000/000826
Other languages
French (fr)
Inventor
Philippe Gouspillou
Original Assignee
Codem Technology (S.A.)
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 Codem Technology (S.A.) filed Critical Codem Technology (S.A.)
Publication of WO2000060898A1 publication Critical patent/WO2000060898A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0435—Details
    • H04Q11/0457—Connection protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Definitions

  • the invention relates to the transmission of information over digital networks, in particular over integrated service digital networks (ISDN).
  • ISDN integrated service digital networks
  • the protocol channel or signaling channel is separated from the information transmission channels.
  • the connection establishment requests are made with a remote site by the signaling channel and the dialogue is actually with the site on the transmission channels after the connection is established.
  • These transmission channels are used to transmit voice (telephone mode), images or any digitized data.
  • the signaling channel also called channel D in the ISDN standard, can have a reduced bandwidth compared to the information transmission channels called B channels and H channels. It is only used sporadically to allow dialogue during the Connexio. Devices seek to optimize the transit of information on these different channels.
  • WO9824078 which uses a digital transmission channel present on the network link to make requests to remote sites.
  • the responses are partially encrypted and returned by the digital transmission channel to the central station.
  • the D channel allows the necessary information to be transmitted to the central site without disturbing the communications which are carried out on the transmission channels.
  • function X25 in channel D is planned.
  • This device has the major drawback of operating with services having a charge for communication. They do not allow basic information to be transmitted at low cost.
  • the object of the invention is to reduce these costs when transmitting predefined information and to free the transmission channels for the transfer of unpredictable information flows such as real-time video.
  • the invention relates to a method for transmitting information over a digital network comprising at least one transmission channel and one signaling channel.
  • the signaling channel transmits frames comprising at least one customizable sequence comprising at least a first sub-sequence defining the nature of the service to be activated by the destination station, and at least a second sub-sequence intended to contain information intended to determine The origin of the call.
  • the caller records, in the second sub-sequence nominally intended to receive the original number of the caller, a message which does not have the function of identifying the caller, the nature of said message being determined by the predefined functionalities of the called party.
  • the called party then reads the said message before the possible opening of the link on the transmission channel.
  • the called party refuses to open the link on receipt of said frame after verification of said message.
  • Connection requests correspond to predefined information that cannot be read directly on said connection requests.
  • a concordance table is used between the connection requests and the information to be transmitted.
  • the transmission channel is channel B and in that the signaling channel is channel D.
  • the sub-sequence of the frame sent by the D channel and corresponding to the address or the original sub-address is linked to the information to be transmitted in the concordance table.
  • the use of the signaling channel is generally free, it is only when the transmission channel is open that billing is carried out.
  • the invention will be better understood with the description of a particular embodiment for networks.
  • Channel D makes it possible to transmit information relating to the connection on the transmission channel to the communication network.
  • the protocol used by this channel is specific to it (protocol D), and allows compatibility with other protocols such as X25.
  • Protocol D mainly makes it possible to send an establishment message carrying out a connection request, connection establishment confirmation and information transmission messages, alert messages, messages containing information on the user. , as well as connection, status and channel release messages.
  • a certain amount of information is transmitted to the network on the D channel in the establishment message.
  • This frame information like the protocol discriminator, call reference, message type or bearer operating mode.
  • Different coding techniques allow one or more pieces of information to be passed simultaneously.
  • One can, for example, predefine a table of concordance between the messages that one wants to transmit and the original address of the call.
  • 8192 values correspond to the coding of 13 bits of information.
  • the code can be defined as using 5 most significant bits defining a family of information, the 8 least significant bits indicating additional information or their combination indicating the status of sensor activity (0 inactive, 1 active).
  • the called party When receiving the frame sent on the D channel, the called party reads the transmitted address and processes the information according to the chosen code. If necessary, he can decide to open channel B in order to perform a predefined function, such as viewing a particular site.
  • This system has the advantage of using the paid B channel only when the need arises, which implies a significant saving for the caller, and reduces the amount of information transferred over a congested B-channel.

Abstract

The invention relates to the transmission of information on digitial networks, especially integrated services digital networks (ISDN), via the signalling channel, using information coding in the origin addresses.

Description

TRANSMISSION D'INFORMATIONS SUR UN RESEAU RNIS. L'invention concerne la transmission d'information sur les réseaux numériques, en particulier sur les réseaux numériques à intégration de service (RNIS) . Sur les réseaux du type RNIS, le canal protocolaire ou canal de signalisation est séparé des canaux de transmission d'information. On effectue les demandes d'établissement de connexion avec un site distant par le canal de signalisation et l'on dialogue réellement avec lé site sur les canaux de transmission après que la connexion soit établie. Ces canaux de transmission permettent de faire transiter de la phonie (mode téléphonie) , des images ou toute donnée numérisée. TRANSMISSION OF INFORMATION OVER AN ISDN NETWORK. The invention relates to the transmission of information over digital networks, in particular over integrated service digital networks (ISDN). On ISDN networks, the protocol channel or signaling channel is separated from the information transmission channels. The connection establishment requests are made with a remote site by the signaling channel and the dialogue is actually with the site on the transmission channels after the connection is established. These transmission channels are used to transmit voice (telephone mode), images or any digitized data.
Le canal de signalisation, dénommé encore canal D dans la norme RNIS, peut posséder une bande passante réduite par rapport aux canaux de transmission d'information appelés canaux B et canaux H. Il n'est utilisé que sporadiquement pour permettre le dialogue lors de la connexio . Des dispositifs cherchent à optimiser le transit de l'information sur ces différents canaux. On peut citer la demande WO9824078 qui utilise un canal de transmission digital présent sur le lien réseau pour effectuer des requêtes à des sites distants. Les réponses sont partiellement cryptées et renvoyées par le canal de transmission digital vers la station centrale. Dans ce cas particulier, le canal D permet de transmettre les informations nécessaires au site central sans perturber les communications qui sont réalisées sur les canaux de transmission. L'utilisation de la fonction X25 dans le canal D est prévue.The signaling channel, also called channel D in the ISDN standard, can have a reduced bandwidth compared to the information transmission channels called B channels and H channels. It is only used sporadically to allow dialogue during the Connexio. Devices seek to optimize the transit of information on these different channels. We can cite the request WO9824078 which uses a digital transmission channel present on the network link to make requests to remote sites. The responses are partially encrypted and returned by the digital transmission channel to the central station. In this particular case, the D channel allows the necessary information to be transmitted to the central site without disturbing the communications which are carried out on the transmission channels. The use of function X25 in channel D is planned.
Ce dispositif, ainsi que ceux généralement utilisés, présente l'inconvénient majeur de fonctionner avec des services possédant une taxation à la communication. Ils ne permettent pas de transmettre des informations élémentaires pour un coût modique.This device, as well as those generally used, has the major drawback of operating with services having a charge for communication. They do not allow basic information to be transmitted at low cost.
L'objet de l'invention est de réduire ces coûts lorsque l'on transmet des informations prédéfinies et de libérer les canaux de transmission pour le transfert des flux d'informations non prévisibles comme la vidéo en temps réel .The object of the invention is to reduce these costs when transmitting predefined information and to free the transmission channels for the transfer of unpredictable information flows such as real-time video.
L ' invention concerne un procédé de transmission d'information sur un réseau numérique comportant au moins un canal de transmission et un canal de signalisation. Le canal de signalisation transmet des trames comportant au moins une séquence personnalisable comportant au moins une première sous-séquence définissant la nature du service à activer par le poste de destination, et au moins une deuxième sous- séquence destinée à contenir une information destinée à déterminer 1 ' origine de 1 ' appel . Avant la transmission de la trame, l'appelant enregistre, dans la deuxième sous-séquence destinée nominalement à recevoir le numéro d'origine de l'appelant, un message qui n'a pas la fonction d'identification de l'appelant, la nature dudit message étant déterminée par les fonctionnalités prédéfinies de l'appelé. L'appelé procède ensuite à la lecture dudit message avant 1 ' ouverture éventuelle de la liaison sur le canal de transmission. Avantageusement, l'appelé refuse l'ouverture de la liaison à la réception de ladite trame après vérification dudit message.The invention relates to a method for transmitting information over a digital network comprising at least one transmission channel and one signaling channel. The signaling channel transmits frames comprising at least one customizable sequence comprising at least a first sub-sequence defining the nature of the service to be activated by the destination station, and at least a second sub-sequence intended to contain information intended to determine The origin of the call. Before the transmission of the frame, the caller records, in the second sub-sequence nominally intended to receive the original number of the caller, a message which does not have the function of identifying the caller, the nature of said message being determined by the predefined functionalities of the called party. The called party then reads the said message before the possible opening of the link on the transmission channel. Advantageously, the called party refuses to open the link on receipt of said frame after verification of said message.
Les requêtes de connexion correspondent à une information prédéfinie et non lisible directement sur lesdites requêtes de connexion. Préférentiellement, on utilise une table de concordance entre les requêtes de connexion et les informations à transmettre.Connection requests correspond to predefined information that cannot be read directly on said connection requests. Preferably, a concordance table is used between the connection requests and the information to be transmitted.
Dans le cadre d'une utilisation dans le RNIS, le canal de transmission est le canal B et en ce que le canal de signalisation est le canal D. Préférentiellement, la sous-séquence de la trame envoyée par le canal D et correspondant à l'adresse ou la sous-adresse d'origine est reliée à 1 ' information à transmettre dans la table de concordance . Le procédé objet de l'invention sera avantageusement utilisé dans les domaines nécessitant des relevés réguliers de l'état ou des interrogations périodiques ou non de sites distants, en particulier dans la télésurveillance. Une application particulièrement avantageuse se trouve dans les systèmes d'alarme comportant un site central et au moins un site distant.In the case of use in ISDN, the transmission channel is channel B and in that the signaling channel is channel D. Preferably, the sub-sequence of the frame sent by the D channel and corresponding to the address or the original sub-address is linked to the information to be transmitted in the concordance table. The process which is the subject of the invention will advantageously be used in fields requiring regular readings of the condition or periodic or non-periodic interrogations of remote sites, in particular in remote monitoring. A particularly advantageous application is found in alarm systems comprising a central site and at least one remote site.
L'utilisation du canal de signalisation est généralement gratuite, ce n'est que lorsque le canal de transmission est ouvert que la facturation est effectuée. L'invention sera mieux comprise avec la description d'une réalisation particulière pour les réseauxThe use of the signaling channel is generally free, it is only when the transmission channel is open that billing is carried out. The invention will be better understood with the description of a particular embodiment for networks.
RNIS, l'invention n'étant en rien limitée par cette implémentation particulière mais s 'appliquant aux différentes techniques connues de l'homme du métier. Le canal D permet de transmettre au réseau de communication les informations liées à la connexion sur le canal de transmission. Le protocole employé par ce canal lui est spécifique (protocole D) , et permet la compatibilité avec d'autres protocoles comme le X25. Le protocole D permet principalement d'envoyer un message d'établissement effectuant une requête de connexion, des messages de confirmation d'établissement de connexion et de transmission d'information, des messages d'alerte, des messages contenant des informations sur l'usager, ainsi que des messages connexion, d'état et de libération du canal.ISDN, the invention being in no way limited by this particular implementation but applying to the various techniques known to those skilled in the art. Channel D makes it possible to transmit information relating to the connection on the transmission channel to the communication network. The protocol used by this channel is specific to it (protocol D), and allows compatibility with other protocols such as X25. Protocol D mainly makes it possible to send an establishment message carrying out a connection request, connection establishment confirmation and information transmission messages, alert messages, messages containing information on the user. , as well as connection, status and channel release messages.
En particulier, lors de l'établissement d'un appel un certain nombre d'informations sont transmises au réseau sur le canal D dans le message d'établissement. On trouve dans cette trame des informations comme le discriminateur de protocole, la référence d'appel, le type de message ou le mode de fonctionnement support. On y trouve aussi le numéro du site appelé (adresse de destination) , le numéro du site appelant (adresse d'origine), la sous-adresse du site appelé (sous-adresse de destination) ainsi que la sous-adresse du site appelant (sous-adresse d'origine).In particular, during the establishment of a call, a certain amount of information is transmitted to the network on the D channel in the establishment message. We find in this frame information like the protocol discriminator, call reference, message type or bearer operating mode. There is also the number of the site called (destination address), the number of the calling site (origin address), the sub-address of the site called (destination sub-address) and the sub-address of the calling site. (original sub-address).
On utilise alors l'information numérique constituant l'adresse d'origine ou la sous-adresse d'origine afin de transmettre une information définie vers le destinataire. Dans le cas d'utilisation de la sous-adresse, le code défini est moins important en nombre d'éléments codés .We then use the digital information constituting the original address or the original sub-address in order to transmit defined information to the recipient. When using the sub-address, the defined code is less important in number of coded elements.
Différentes techniques de codage permettent de passer une seule information ou plusieurs simultanément. On peut, par exemple, prédéfinir une table de concordance entre les messages que 1 ' on veut transmettre et 1 ' adresse d ' origine de 1 ' appel .Different coding techniques allow one or more pieces of information to be passed simultaneously. One can, for example, predefine a table of concordance between the messages that one wants to transmit and the original address of the call.
Dans le cadre d'une transmission d'informations d'alarme ou de toute autre information simple ou de type tout ou rien, on peut envisager une utilisation binaire : 8192 valeurs correspondent au codage de 13 bits d'information. Le code peut être défini comme utilisant 5 bits de poids fort définissant une famille d'information, les 8 bits de poids faible indiquant une information complémentaire ou leur combinaison indiquant l'état d'activité de capteurs (0 inactif, 1 actif) .In the context of the transmission of alarm information or any other simple or all-or-nothing information, a binary use can be envisaged: 8192 values correspond to the coding of 13 bits of information. The code can be defined as using 5 most significant bits defining a family of information, the 8 least significant bits indicating additional information or their combination indicating the status of sensor activity (0 inactive, 1 active).
Lorsqu'il reçoit la trame émise sur le canal D, l'appelé lit l'adresse transmise et traite l'information suivant le code choisi. Si cela s'avère nécessaire, il peut décider d'ouvrir le canal B afin d'effectuer une fonction prédéfinie, comme la visualisation d'un site particulier.When receiving the frame sent on the D channel, the called party reads the transmitted address and processes the information according to the chosen code. If necessary, he can decide to open channel B in order to perform a predefined function, such as viewing a particular site.
Ce système présente l'avantage de n'utiliser le canal B payant que lorsque le besoin s'en fait ressentir, ce qui implique une économie non négligeable pour l'appelant, et permet de réduire la quantité d'information transférée sur un canal B qui est encombré. This system has the advantage of using the paid B channel only when the need arises, which implies a significant saving for the caller, and reduces the amount of information transferred over a congested B-channel.

Claims

REVENDICATIONS
1 - Procédé de transmission d'information sur un réseau numérique comportant au moins un canal de transmission et un canal de signalisation, ledit canal de signalisation transmettant des trames comportant au moins une séquence personnalisable comportant au moins une première sous-séquence définissant la nature du service à activer par le poste de destination, et au moins une deuxième sous-séquence destinée à contenir une information destinée à déterminer 1 ' origine de 1 ' appel caractérisé en ce que, avant la transmission de la trame, l'appelant enregistre, dans ladite deuxième sous-séquence destinée nominalement à recevoir les informations d'origine un message qui n'a pas la fonction d'identification de l'appelant, la nature dudit message étant déterminée par les fonctionnalités prédéfinies de l'appelé, et en ce que 1 ' appelé procède à la lecture dudit message avant l'ouverture éventuelle de la liaison. 2 - Procédé de transmission d'information sur un réseau numérique comportant au moins un canal de transmission et un canal de signalisation selon la revendication 1 caractérisé en ce que l'appelé refuse l'ouverture de la liaison à la réception de ladite trame après vérification dudit message.1 - Method for transmitting information over a digital network comprising at least one transmission channel and one signaling channel, said signaling channel transmitting frames comprising at least one customizable sequence comprising at least a first sub-sequence defining the nature of the service to be activated by the destination station, and at least a second sub-sequence intended to contain information intended to determine the origin of the call characterized in that, before the transmission of the frame, the caller records, in said second sub-sequence nominally intended to receive the original information a message which does not have the function of identifying the caller, the nature of said message being determined by the predefined functionalities of the called party, and in that 1 called called read said message before the possible opening of the link. 2 - Method for transmitting information on a digital network comprising at least one transmission channel and one signaling channel according to claim 1 characterized in that the called party refuses to open the link upon receipt of said frame after verification of said message.
3 - Procédé de transmission d'information sur un réseau numérique selon la revendication 1 ou 2 caractérisé en ce que l'on utilise une table de concordance entre les requêtes de connexion et les informations à transmettre. 4 - Procédé de transmission d'information sur un réseau numérique selon l'une quelconque des revendications précédentes caractérisé en ce que le canal de transmission est le canal B et en ce que le canal de signalisation est le canal D du RNIS. 5 - Procédé de transmission d'information sur un réseau numérique selon la revendication 4 caractérisé en ce que la partie de la trame envoyée par le canal D et correspondant à l'adresse de l'appelant est reliée à l'information à transmettre dans la table de concordance.3 - A method of transmitting information over a digital network according to claim 1 or 2 characterized in that a concordance table is used between the connection requests and the information to be transmitted. 4 - Method for transmitting information over a digital network according to any one of the preceding claims, characterized in that the transmission channel is channel B and in that the signaling channel is channel D of ISDN. 5 - A method of transmitting information over a digital network according to claim 4 characterized in that the part of the frame sent by the D channel and corresponding to the address of the caller is connected to the information to be transmitted in the concordance table.
6 - Procédé de transmission d'information sur un réseau numérique selon la revendication 4 caractérisé en ce que la partie de la trame envoyée par le canal D et correspondant à la sous adresse de d'origine est reliée à l'information à transmettre dans la table de concordance.6 - A method of transmitting information over a digital network according to claim 4 characterized in that the part of the frame sent by the D channel and corresponding to the sub address of origin is connected to the information to be transmitted in the concordance table.
7 - Application du procédé objet de la revendication 1 à un système de télésurveillance.7 - Application of the method object of claim 1 to a remote monitoring system.
8 - Application du procédé objet de la revendication 1 à un système d'alarme comportant un site central et au moins un site distant. 8 - Application of the method of claim 1 to an alarm system comprising a central site and at least one remote site.
PCT/FR2000/000826 1999-04-02 2000-03-31 Transmission of information on an isdn network WO2000060898A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9904188A FR2791836A1 (en) 1999-04-02 1999-04-02 ISDN line establishment of communication uses signalling channel to exchange data about transmitter and receiver prior to use of main transmission channel
FR99/04188 1999-04-02

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WO2000060898A1 true WO2000060898A1 (en) 2000-10-12

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Citations (6)

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DE4416254A1 (en) * 1994-05-07 1995-11-09 Deutsche Bundespost Telekom Transmission security procedure in ISDN network
WO1998009420A1 (en) * 1996-08-27 1998-03-05 Siemens Schweiz Ag Method for monitoring and checking subscriber connections to isdn
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Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
US5181238A (en) * 1989-05-31 1993-01-19 At&T Bell Laboratories Authenticated communications access service
JPH0498345A (en) * 1990-08-09 1992-03-31 Fujitsu Ltd Communication control system for terminal equipment
DE4416254A1 (en) * 1994-05-07 1995-11-09 Deutsche Bundespost Telekom Transmission security procedure in ISDN network
WO1998009420A1 (en) * 1996-08-27 1998-03-05 Siemens Schweiz Ag Method for monitoring and checking subscriber connections to isdn
WO1998024078A1 (en) * 1996-11-26 1998-06-04 British Telecommunications Public Limited Company Communications system
WO1998030011A2 (en) * 1996-12-30 1998-07-09 Hellemann Hans P Method for monitoring an object by means of a digital data network

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Title
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