WO2005053293A1 - Xdsl line test method - Google Patents

Xdsl line test method Download PDF

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Publication number
WO2005053293A1
WO2005053293A1 PCT/FR2004/050620 FR2004050620W WO2005053293A1 WO 2005053293 A1 WO2005053293 A1 WO 2005053293A1 FR 2004050620 W FR2004050620 W FR 2004050620W WO 2005053293 A1 WO2005053293 A1 WO 2005053293A1
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WO
WIPO (PCT)
Prior art keywords
xdsl
dslam
line
software module
network
Prior art date
Application number
PCT/FR2004/050620
Other languages
French (fr)
Inventor
Jean Schmitt
Dominique Le Foll
Original Assignee
Acterna Ipms
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Filing date
Publication date
Application filed by Acterna Ipms filed Critical Acterna Ipms
Priority to EP04805860A priority Critical patent/EP1695534A1/en
Publication of WO2005053293A1 publication Critical patent/WO2005053293A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • 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
    • H04M11/066—Telephone sets adapted for data transmision
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2209—Arrangements for supervision, monitoring or testing for lines also used for data transmission

Definitions

  • the invention lies in the field of pre-quali ication measures and fault location measurement on telecommunications services using xDSL (x Digital Line Subscriber) broadband transmission lines.
  • the invention relates more specifically to a method for controlling an xDSL line connecting multiplexing equipment ensuring the multiplexing of the data streams exchanged with the broadband network to a transport network and a subscriber to a broadband network.
  • FIG. 1 schematically illustrates a model of an access network comprising - a service user part SU (for Service User, in English), - a network service provider or NSP part (for Network Service Provider) , in English) corresponding to an operator who owns its infrastructure (transmission route, switching equipment, routers, transmission equipment, supervision equipment, etc.).
  • the NSP makes its network available to service users so that they can access content providers or connect with remote equipment.
  • an Internet service provider or ISP for Internet Service Provider, in English
  • the NSP part includes access points PA1, PA2 and PA3 respectively to the Internet, ATM and RT frame relay.
  • the ISP part includes a CT concentrator, and 2 DSLAM multiplexing equipment.
  • the SU part includes ATU-R (for ADSL Transmission Unit Remote Side).
  • an xDSL link comprises multiplexing equipment 2 called DSLAM (for Digital Subscriber Line Access Multiplexer in English) intended to concentrate the traffic originating from different xDSL links in order to route it to a particular transport network.
  • This line may include a switching filter 4 called a “splitter” in the English language intended to separate, when necessary, the bandwidth reserved for the telephone service from the bandwidth used for broadband transmission.
  • a connection matrix 8 (TAMS for Test Access Matrix Switch in English) is arranged between the DSLAM and the local loop 10 via a distributor 12.
  • connection matrix 8 is connected to a measurement module 14 intended to assess performance, search faults and test the transmission line and the services provided through that line.
  • the connection matrix 8 and the measurement module 14 can be arranged inside or outside the DSLAM.
  • These provisions pose a congestion problem because the connection matrix 8 requires additional equipment and must be connected by wiring to all the xDSL lines of the local loop.
  • the presence of additional active equipment on the line generates parasitic capacities which have the effect of reducing the bandwidth available for the xDSL services carried.
  • these arrangements require an element for managing the DSLAM and an element for managing the measurement module 14.
  • the object of the invention is to overcome the drawbacks of the prior art described above by means of a method of test which does not require any additional equipment in series on the line tested.
  • the invention recommends a method of testing lines and xDSL services consisting in downloading directly onto the line interface of DSLAM, a software module capable of performing fault measurements on the local loop and measurements of the quality of services provided by the broadband network.
  • ADSL type services for which switched services (voice, fax, etc.) are transported on the same telephone pair, it should be noted that this innovation makes it possible to carry out measurements on DSL services without disrupting account telephone services. given that no external element such as a switching matrix is inserted and thus cuts the telephone services.
  • this invention makes it possible to add to the test functions means of real-time verification of the performance of the Quality of the connected Services.
  • said software module is downloaded to the multiplexing equipment (DSLAM) of the xDSL line.
  • said software module is downloaded on a dedicated channel connected to a network interface of the multiplexing equipment (DSLAM) of the xDSL line.
  • said software module is downloaded on a dedicated channel connected to an internal bus of the multiplexing equipment (DSLAM) of the xDSL line.
  • said software module is downloaded on a dedicated channel connected to a digital processing card (DSP) of the multiplexing equipment (DSLAM) of the xDSL line.
  • DSP digital processing card
  • FIG. 1 schematically illustrates the three areas of intervention characterizing xDSL services
  • FIG. 2 already described, schematically illustrates an XDSL link of the prior art
  • FIG. 3 schematically illustrates a first embodiment of the invention
  • - Figure 4 schematically illustrates a second embodiment of the invention
  • - Figure 5 schematically illustrates a third embodiment of the invention.
  • FIGS. 3 to 5 represent an ADSL line connected, on the one hand, to a user equipment 20 via a HTU-R modem (for HDSL Transmission Unit Remote Side, in English), and on the other hand, to a connected DSLAM 2 an IS Internet service provider via an ATM network (for Asynchronous Transfer Mode, in English).
  • the DSLAM 2 comprises for each xDSL line, a digital processing card 30 connected to the distributor 12 via a DSL bridge 32 and to an internal bus 34.
  • the test software is downloaded via the network interface (SDH / ATM or IP) of DSLAM 2.
  • the measurement module is connected to the network interface of DSLAM (SDH / ATM interface or interface IP).
  • the test module must have knowledge of the addresses and locations of the memories of the signal processing circuits and or of the ASICS of the xDSL modems composing the DSLAM to which it is connected to download the test programs and execute them instead. and places programs used for normal operation of xDSL modems.
  • This download consists of writing test programs to the DSP or ASICs of the xDSL modem in the program memory, for example for measuring: 1.
  • HTU-C central modem
  • HTU-R remote modem
  • the connectivity and the possibility of teleworking on the layer of ATM transmission via OAM cells “Connectivity and authentication on the PPP layer” Connectivity, responding to "pings” and downloading p ages and or files via IP, FTP
  • VPi / VCi Virtual Path and Virtual Channels
  • the test software is downloaded to the internal bus 34.
  • the measurement module is connected to the internal bus of the DSLAM (SDH / ATM interface or IP interface).
  • the test module must have knowledge of the addresses and locations of the memories and signal processing circuits and or ASICS of the xDSL modems composing the DSLAM to which it is connected to download the test programs and execute them. instead of the programs used for the normal operation of xDSL modems.
  • This download consists of writing test programs for the measurement, for example, of the DSP or ASICs of the xDSL modem into the program memory. 3.
  • Measurements on xDSL services by emulating either a central modem (HTU-C) or a remote modem (HTU-R) and by checking: "connectivity and the possibility of teleworking on the ATM transmission layer via OAM cells” Connectivity and authentication on the PPP layer "Connectivity, • response to “pings” and downloading of pages and or files via IP, FTP protocols.
  • HTU-C central modem
  • HTU-R remote modem
  • the test software is downloaded directly to the digital processing cards 30.
  • the measurement module is connected to the signal processing and / or ASICS circuits of the DSLAM xDSL modems.
  • the test module downloads the test programs and runs it instead of the programs used for the normal operation of xDSL modems. This download consists of writing test programs for the measurement, for example, of the DSP or ASICs of the xDSL modem into the program memory. 5.

Abstract

The invention relates to a method for the non-intrusive testing of an xDSL line which connects a subscriber to a broadband network and to a switched telephone network. The inventive method consists in using the line for the direct downloading of a software module that can take fault measurements along the local loop and measurements relating to the quality of services provided by the broadband network.

Description

PROCEDE DE CONTROLE D'UNE LIGNE xDSL DESCRIPTION METHOD FOR CONTROLLING AN xDSL DESCRIPTION LINE
DOMAINE TECHNIQUE L'invention se situe dans le domaine des mesures de pré-quali ication et de mesure de localisation de défauts sur les services de télécommunications utilisant les lignes de transmission xDSL (pour x Digital Line Subscriber) large bande. L'invention concerne plus spécifiquement un procédé de contrôle d'une ligne xDSL reliant un équipement de multiplexage assurant le multiplexage des flux de données échangés avec le réseau haut débit vers un réseau de transport et un abonné à un réseau haut débit .TECHNICAL FIELD The invention lies in the field of pre-quali ication measures and fault location measurement on telecommunications services using xDSL (x Digital Line Subscriber) broadband transmission lines. The invention relates more specifically to a method for controlling an xDSL line connecting multiplexing equipment ensuring the multiplexing of the data streams exchanged with the broadband network to a transport network and a subscriber to a broadband network.
ETAT DE LA TECHNIQUE ANTERIEURE La figure 1 illustre schématiquement un modèle d'un réseau d'accès comportant - une partie utilisateur de service SU (pour Service User, en anglais) , - une partie fournisseur de service réseau ou NSP (pour Network Service Provider, en anglais) correspondant à un opérateur propriétaire de son infrastructure (artère de transmission, équipement de commutation, routeurs, équipement de transmission, équipement de supervision...) . Le NSP met son réseau à la disposition des utilisateurs de service afin que ceux- ci puissent accéder à des fournisseurs de contenus ou se connecter avec un équipement distant. - une partie fournisseur de services Internet ou ISP (pour Internet Service Provider, en anglais) qui a pour fonction de fournir l'accès aux serveurs Internet aux abonnés via les NSPs. La partie NSP comporte des points d'accès PAl, PA2 et PA3 respectivement au réseau Internet, ATM et relais de trames RT. La partie ISP comporte un concentrateur CT, et un équipement de multiplexage 2 DSLAM. La partie SU comporte ATU-R (pour ADSL Transmission Unit Remote Side) . En référence à la figure 2, une liaison xDSL comporte un équipement de multiplexage 2 appelé DSLAM (pour Digital Subscriber Line Access Multiplexer en anglais) destiné à concentrer le trafic en provenance de différents liens xDSL pour l'aiguiller vers un réseau de transport particulier. Cette ligne peut comporter un filtre d' aiguillage 4 appelé « splitter » en langue anglaise destiné à séparer, lorsque nécessaire, la bande passante réservée au service téléphonique de la bande passante utilisée pour la transmission haut débit. Une matrice de connexion 8 (TAMS pour Test Access Matrix Switch en anglais) est agencée entre le DSLAM et la boucle locale 10 via un répartiteur 12. Cette matrice de connexion 8 est reliée à un module de mesure 14 destiné à évaluer les performances, rechercher les défauts et tester la ligne de transmission et les services fournis à travers cette ligne. La matrice de connexion 8 et le module de mesure 14 peuvent être agencés à l'intérieur ou à l'extérieur du DSLAM. Ces dispositions posent un problème d'encombrement du fait que la matrice de connexion 8 nécessite des équipements supplémentaires et doit être reliée par câblage à toutes les lignes xDSL de la boucle locale. Par ailleurs, outre les raisons financières, la présence d'équipements actifs supplémentaires sur la ligne génère des capacités parasites qui ont pour effet de réduire la bande passante disponible pour les services xDSL transportés. En outre, ces dispositions nécessitent un élément de gestion du DSLAM et un élément de gestion du module de mesure 14. Le but de l'invention est de pallier les inconvénients de l'art antérieur décrit ci-dessus au moyen d'un procédé de test qui ne nécessite aucun équipement supplémentaire en série sur la ligne testée.STATE OF THE PRIOR ART FIG. 1 schematically illustrates a model of an access network comprising - a service user part SU (for Service User, in English), - a network service provider or NSP part (for Network Service Provider) , in English) corresponding to an operator who owns its infrastructure (transmission route, switching equipment, routers, transmission equipment, supervision equipment, etc.). The NSP makes its network available to service users so that they can access content providers or connect with remote equipment. - an Internet service provider or ISP (for Internet Service Provider, in English) which has the function of providing access to Internet servers to subscribers via NSPs. The NSP part includes access points PA1, PA2 and PA3 respectively to the Internet, ATM and RT frame relay. The ISP part includes a CT concentrator, and 2 DSLAM multiplexing equipment. The SU part includes ATU-R (for ADSL Transmission Unit Remote Side). With reference to FIG. 2, an xDSL link comprises multiplexing equipment 2 called DSLAM (for Digital Subscriber Line Access Multiplexer in English) intended to concentrate the traffic originating from different xDSL links in order to route it to a particular transport network. This line may include a switching filter 4 called a “splitter” in the English language intended to separate, when necessary, the bandwidth reserved for the telephone service from the bandwidth used for broadband transmission. A connection matrix 8 (TAMS for Test Access Matrix Switch in English) is arranged between the DSLAM and the local loop 10 via a distributor 12. This connection matrix 8 is connected to a measurement module 14 intended to assess performance, search faults and test the transmission line and the services provided through that line. The connection matrix 8 and the measurement module 14 can be arranged inside or outside the DSLAM. These provisions pose a congestion problem because the connection matrix 8 requires additional equipment and must be connected by wiring to all the xDSL lines of the local loop. In addition, apart from financial reasons, the presence of additional active equipment on the line generates parasitic capacities which have the effect of reducing the bandwidth available for the xDSL services carried. In addition, these arrangements require an element for managing the DSLAM and an element for managing the measurement module 14. The object of the invention is to overcome the drawbacks of the prior art described above by means of a method of test which does not require any additional equipment in series on the line tested.
EXPOSÉ DE L'INVENTION L'invention préconise un procédé de test de ligne et de services xDSL consistant à télécharger directement sur l'interface de ligne du DSLAM, un module logiciel apte à effectuer des mesures de défaut sur la boucle locale et des mesures de la qualité des services fournis par le réseau haut débit . Pour les services de type ADSL pour lequel les services commutés (voix, télécopie...) sont transportés sur la même paire téléphonique, il est à noter que cette innovation permet d' effectuer les mesures sur les services DSL sans perturber les services téléphoniques compte tenu qu'aucun élément externe comme une matrice de commutation n'est insérée et ainsi coupe les services téléphoniques . En outre, cette invention permet d'ajouter aux fonctions de tests des moyens de vérification en temps réel de la performance de la Qualité des Services raccordés . Dans une première variante de réalisation, ledit module logiciel est téléchargé au niveau de l'équipement de multiplexage (DSLAM) de la ligne xDSL. Dans une deuxième variante de réalisation ledit module logiciel est téléchargé sur un canal dédié connecté à une interface réseau de l'équipement de multiplexage (DSLAM) de la ligne xDSL. Dans une troisième variante de réalisation ledit module logiciel est téléchargé sur un canal dédié connecté à un bus interne de l'équipement de multiplexage (DSLAM) de la ligne xDSL. Dans une quatrième variante de réalisation ledit module logiciel est téléchargé sur un canal dédié connecté à une carte de traitement numérique (DSP) de l'équipement de multiplexage (DSLAM) de la ligne xDSL.PRESENTATION OF THE INVENTION The invention recommends a method of testing lines and xDSL services consisting in downloading directly onto the line interface of DSLAM, a software module capable of performing fault measurements on the local loop and measurements of the quality of services provided by the broadband network. For ADSL type services for which switched services (voice, fax, etc.) are transported on the same telephone pair, it should be noted that this innovation makes it possible to carry out measurements on DSL services without disrupting account telephone services. given that no external element such as a switching matrix is inserted and thus cuts the telephone services. In addition, this invention makes it possible to add to the test functions means of real-time verification of the performance of the Quality of the connected Services. In a first alternative embodiment, said software module is downloaded to the multiplexing equipment (DSLAM) of the xDSL line. In a second variant embodiment, said software module is downloaded on a dedicated channel connected to a network interface of the multiplexing equipment (DSLAM) of the xDSL line. In a third variant embodiment, said software module is downloaded on a dedicated channel connected to an internal bus of the multiplexing equipment (DSLAM) of the xDSL line. In a fourth variant, said software module is downloaded on a dedicated channel connected to a digital processing card (DSP) of the multiplexing equipment (DSLAM) of the xDSL line.
BRÈVE DESCRIPTION DES DESSINS D'autres caractéristiques et avantages de l'invention ressortiront de la description qui va suivre, prise à titre d'exemple non limitatif, en référence aux figures annexées dans lesquelles : - la figure 1, déjà décrite, illustre schématiquement les trois domaines d' intervention caractérisant les services xDSL ; - la figure 2, déjà décrite, illustre schématiquement une liaison XDSL de l'art antérieur, - la figure 3 illustre schématiquement un premier mode de réalisation de l'invention, - la figure 4 illustre schématiquement un deuxième mode de réalisation de l'invention, - la figure 5 illustre schématiquement un troisième mode de réalisation de l'invention. EXPOSÉ DÉTAILLÉ DE MODES DE RÉALISATION PARTICULIERSBRIEF DESCRIPTION OF THE DRAWINGS Other characteristics and advantages of the invention will emerge from the description which follows, taken by way of nonlimiting example, with reference to the appended figures in which: - Figure 1, already described, schematically illustrates the three areas of intervention characterizing xDSL services; FIG. 2, already described, schematically illustrates an XDSL link of the prior art, - FIG. 3 schematically illustrates a first embodiment of the invention, - Figure 4 schematically illustrates a second embodiment of the invention, - Figure 5 schematically illustrates a third embodiment of the invention. DETAILED PRESENTATION OF PARTICULAR EMBODIMENTS
Les figures 3 à 5 représentent une ligne ADSL reliée, d'une part, à un équipement utilisateur 20 via un modem HTU-R (pour HDSL Transmission Unit Remote Side, en anglais), et d'autre part, à un DSLAM 2 connecté un fournisseur de service Internet IS via un réseau ATM (pour Asynchronous Transfer Mode, en anglais) . Comme on peut le voir sur les figures 4 et 5, le DSLAM 2 comporte pour chaque ligne xDSL, une carte de traitement numérique 30 reliée au répartiteur 12 via un pont DSL 32 et à un bus interne 34.FIGS. 3 to 5 represent an ADSL line connected, on the one hand, to a user equipment 20 via a HTU-R modem (for HDSL Transmission Unit Remote Side, in English), and on the other hand, to a connected DSLAM 2 an IS Internet service provider via an ATM network (for Asynchronous Transfer Mode, in English). As can be seen in FIGS. 4 and 5, the DSLAM 2 comprises for each xDSL line, a digital processing card 30 connected to the distributor 12 via a DSL bridge 32 and to an internal bus 34.
Sur la figure 3, le logiciel de test est téléchargé via l'interface réseau (SDH/ATM ou IP) du DSLAM 2. Dans cette configuration le module de mesure est connecté à l'interface réseau du DSLAM (interface SDH/ATM ou interface IP) . Dans ce cas, le module de test doit avoir la connaissance des adresses et emplacements des mémoires des circuits de traitement du signal et ou des ASICS des modems xDSL composant le DSLAM sur lequel il est raccordé pour télécharger les programmes de test et les exécuter en lieu et place des programmes utilisés pour le fonctionnement normal des modems xDSL. Ce téléchargement consiste à écrire dans la mémoire programme des DSP ou des ASICs des modem xDSL des programmes de test permettant par exemple de mesurer : 1. Mesures analogiques large bande sur la ligne « téléphonique » raccordée au DSP ou à l'ASIC 1 Mesure de réflectométrie fréquentielle telle que décrite dans le brevet Acterna EP0980151 de façon à obtenir le paramètre SU pour déterminer la longueur de la ligne et son affaiblissement en fonction de la fréquence * Mesure du bruit large bande au niveau du DSLAM " Possibilité d'activer des boudeurs distants via l'envoi de fréquences particulières 2. Mesures sur les services xDSL en émulant soit un modem central (HTU-C) ou un modem distant (HTU-R) et en vérifiant : " la connectivité et les possibilité de télébouclages sur la couche de transmission ATM via les cellules OAM " La connectivité et l' authentification sur la couche PPP " La connectivité, la réponse à des « pings » et le téléchargement de pages et ou de fichiers via les protocoles IP, FTP Ainsi par exemple, dans le cas de raccordement via une interface SDH/ATM, la communication entre le module de test et chacun des modems xDSL interfaces sur les lignes à tester peut être véhiculée via les VPi/VCi (Virtual Path et Virtual Channels) utilisés dans le cas du fonctionnement « normal » de ces modems.In Figure 3, the test software is downloaded via the network interface (SDH / ATM or IP) of DSLAM 2. In this configuration, the measurement module is connected to the network interface of DSLAM (SDH / ATM interface or interface IP). In this case, the test module must have knowledge of the addresses and locations of the memories of the signal processing circuits and or of the ASICS of the xDSL modems composing the DSLAM to which it is connected to download the test programs and execute them instead. and places programs used for normal operation of xDSL modems. This download consists of writing test programs to the DSP or ASICs of the xDSL modem in the program memory, for example for measuring: 1. Broadband analog measurements on the "telephone" line connected to the DSP or ASIC 1 Measurement of frequency reflectometry as described in the Acterna patent EP0980151 so as to obtain the parameter SU to determine the length of the line and its attenuation according to the frequency * Measurement of the broadband noise at the level of the DSLAM "Possibility of activating distant loops via the sending of specific frequencies 2. Measurements on xDSL services by emulating either a central modem (HTU-C) or a remote modem (HTU-R) and checking: "the connectivity and the possibility of teleworking on the layer of ATM transmission via OAM cells "Connectivity and authentication on the PPP layer" Connectivity, responding to "pings" and downloading p ages and or files via IP, FTP Thus for example, in the case of connection via an SDH / ATM interface, the communication between the test module and each of the xDSL interface modems on the lines to be tested can be conveyed via the VPi / VCi (Virtual Path and Virtual Channels) used in the case of "normal" operation of these modems.
Sur la figure 4, le logiciel de test est téléchargé sur le bus interne 34. Dans cette configuration le module de mesure est connecté au bus interne du DSLAM (interface SDH/ATM ou interface IP) . Dans ce cas, le module de test doit avoir la connaissance des adresses et des emplacements des mémoires et des circuits de traitement du signal et ou des ASICS des modems xDSL composant le DSLAM sur lequel il est raccordé pour télécharger les programmes de test et les exécuter en lieu et place des programmes utilisés pour le fonctionnement normal des modems xDSL. Ce téléchargement consiste à écrire dans la mémoire programme des DSP ou des ASICs des modem xDSL des programmes de test permettant par exemple de mesurer : 3. Mesures analogiques large bande sur la ligne « téléphonique » raccordée au DSP ou à l'ASIC " Mesure de réflectométrie fréquentielle telle que décrite dans le brevet Acterna EP0980151 de façon à obtenir le paramètre SU pour déterminer la longueur de la ligne et son affaiblissement en fonction de la fréquence " Mesure du bruit large bande au niveau du DSLAM " Possibilité d'activer des boudeurs distants via l'envoi de fréquences particulières 4. Mesures sur les services xDSL en émulant soit un modem central (HTU-C) ou un modem distant (HTU-R) et en vérifiant : " la connectivité et les possibilité de télébouclages sur la couche de transmission ATM via les cellules OAM " La connectivité et l' authentification sur la couche PPP " La connectivité, la • réponse à des « pings » et le téléchargement de pages et ou de fichiers via les protocoles IP, FTP Ainsi par exemple, dans le cas de raccordement via une interface UTOPIA, la communication entre le module de test et chacun des modems xDSL interfaces sur les lignes à tester peut être véhiculée via les VPi/VCi (Virtual Path et Virtual Channels) utilisés dans le cas du fonctionnement « normal » de ces modems.In FIG. 4, the test software is downloaded to the internal bus 34. In this configuration, the measurement module is connected to the internal bus of the DSLAM (SDH / ATM interface or IP interface). In this case, the test module must have knowledge of the addresses and locations of the memories and signal processing circuits and or ASICS of the xDSL modems composing the DSLAM to which it is connected to download the test programs and execute them. instead of the programs used for the normal operation of xDSL modems. This download consists of writing test programs for the measurement, for example, of the DSP or ASICs of the xDSL modem into the program memory. 3. Broadband analog measurements on the "telephone" line connected to the DSP or ASIC "Measurement of frequency reflectometry as described in Acterna patent EP0980151 so as to obtain the parameter SU to determine the length of the line and its attenuation as a function of frequency "Measurement of broadband noise at the DSLAM level" Possibility of activating remote loops via the sending of specific frequencies 4. Measurements on xDSL services by emulating either a central modem (HTU-C) or a remote modem (HTU-R) and by checking: "connectivity and the possibility of teleworking on the ATM transmission layer via OAM cells" Connectivity and authentication on the PPP layer "Connectivity, • response to “pings” and downloading of pages and or files via IP, FTP protocols. For example, in the case of connection via a UTOPIA interface, communication between the test module and each of the xDSL interface modems on the lines to testing can be carried out via the VPi / VCi (Virtual Path and Virtual Channels) used in the “normal” operation of these modems.
Sur la figure 5, le logiciel de test est téléchargé directement sur les cartes de traitement numérique 30. Dans cette configuration le module de mesure est connecté aux circuits de traitement du signal et ou des ASICS des modems xDSL du DSLAM. Dans ce cas, le module de test télécharge les programmes de test et le exécuter en lieu et place des programmes utilisés pour le fonctionnement normal des modems xDSL. Ce téléchargement consiste à écrire dans la mémoire programme des DSP ou des ASICs des modem xDSL des programmes de test permettant par exemple de mesurer : 5. Mesures analogiques large bande sur la ligne « téléphonique » raccordée au DSP ou à l'ASIC » Mesure de réflectométrie fréquentielle telle que décrite dans le brevet Acterna EP0980151 de façon à obtenir le paramètre SU pour déterminer la longueur de la ligne et son affaiblissement en fonction de la fréquence 1 Mesure du bruit large bande au niveau du DSLAM " Possibilité d'activer des boudeurs distants via l'envoi de fréquences particulières 6. Mesures sur les services xDSL en émulant soit un modem central (HTU-C) ou un modem distant (HTU-R) et en vérifiant : « la connectivité et les possibilité de télébouclages sur la couche de transmission ATM via les cellules OAM La connectivité et l' authentification sur la couche PPPIn FIG. 5, the test software is downloaded directly to the digital processing cards 30. In this configuration, the measurement module is connected to the signal processing and / or ASICS circuits of the DSLAM xDSL modems. In this case, the test module downloads the test programs and runs it instead of the programs used for the normal operation of xDSL modems. This download consists of writing test programs for the measurement, for example, of the DSP or ASICs of the xDSL modem into the program memory. 5. Broadband analog measurements on the "telephone" line connected to the DSP or ASIC " Measurement of frequency reflectometry as described in the Acterna patent EP0980151 so as to obtain the parameter SU to determine the length of the line and its attenuation according to the frequency 1 Measurement of the broadband noise at the level of the DSLAM "Possibility of activating distant loops via the sending of specific frequencies 6. Measurements on xDSL services by emulating either a central modem (HTU-C) or a remote modem (HTU-R) and checking: " the connectivity and the possibility of teleworking on the layer of ATM transmission via OAM cells Connectivity and authentication on the PPP layer
La connectivité, la réponse à des « pings » et le téléchargement de pages et ou de fichiers via les protocoles IP, FTP Connectivity, responding to pings and downloading pages and files via IP, FTP protocols

Claims

REVENDICATIONS
1. Procédé de contrôle non intrusif d'une une ligne xDSL reliant un abonné à un réseau haut débit et à un réseau téléphonique commuté, caractérisé en ce qu'il consiste à télécharger directement sur les ressources matérielles utilisées pour piloter ladite ligne un module logiciel apte à effectuer des mesures de défaut sur la boucle locale et des mesures de la qualité des service fournis par le réseau haut débit.1. Non-intrusive method for controlling an xDSL line connecting a subscriber to a broadband network and to a switched telephone network, characterized in that it consists in downloading directly to the hardware resources used to control said line a software module able to carry out fault measurements on the local loop and measurements of the quality of service provided by the broadband network.
2. Procédé selon la revendication 1, caractérisé en ce que ledit module logiciel est téléchargé au niveau de l'équipement de multiplexage (DSLAM) de la ligne xDSL2. Method according to claim 1, characterized in that said software module is downloaded at the level of the multiplexing equipment (DSLAM) of the xDSL line
3. Procédé selon la revendication 1, caractérisé en ce que ledit module logiciel est téléchargé sur un canal dédié connecté à une interface réseau de l'équipement de multiplexage (DSLAM) de la ligne xDSL.3. Method according to claim 1, characterized in that said software module is downloaded on a dedicated channel connected to a network interface of the multiplexing equipment (DSLAM) of the xDSL line.
4. Procédé selon la revendication 1, caractérisé en ce que ledit module logiciel est téléchargé sur un canal dédié connecté à un bus interne de l'équipement de multiplexage (DSLAM) de la ligne xDSL.4. Method according to claim 1, characterized in that said software module is downloaded on a dedicated channel connected to an internal bus of the multiplexing equipment (DSLAM) of the xDSL line.
5. Procédé selon la revendication 1, caractérisé en ce que ledit module logiciel est téléchargé sur un canal dédié connecté à une carte de traitement numérique (DSP) de l'équipement de multiplexage (DSLAM) de la ligne xDSL.5. Method according to claim 1, characterized in that said software module is downloaded on a dedicated channel connected to a card digital processing (DSP) of the multiplexing equipment (DSLAM) of the xDSL line.
6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que ledit réseau haut débit est un réseau ATM. 6. Method according to one of claims 1 to 5, characterized in that said broadband network is an ATM network.
PCT/FR2004/050620 2003-11-25 2004-11-25 Xdsl line test method WO2005053293A1 (en)

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FR0350909A FR2862825B1 (en) 2003-11-25 2003-11-25 METHOD FOR CONTROLLING A xDSL LINE

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FR2892262B1 (en) * 2005-10-18 2008-10-10 Acterna Ipms Soc Par Actions S METHOD FOR DISTRIBUTING HARDWARE AND SOFTWARE RESOURCES FOR CONTROLLING HIGH-SPEED BONDS

Citations (3)

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Publication number Priority date Publication date Assignee Title
WO2001001597A1 (en) * 1999-06-23 2001-01-04 Teradyne, Inc. Qualifying telephone lines for data transmission
WO2002005529A1 (en) * 2000-07-10 2002-01-17 Verizon Services Corp. Expert system for loop qualification of xdsl services
US20020089999A1 (en) * 2001-01-09 2002-07-11 Siemens Aktiengesellschaft Of Munich Method for double-ended line qualification and monitoring of xDSL links

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001001597A1 (en) * 1999-06-23 2001-01-04 Teradyne, Inc. Qualifying telephone lines for data transmission
WO2002005529A1 (en) * 2000-07-10 2002-01-17 Verizon Services Corp. Expert system for loop qualification of xdsl services
US20020089999A1 (en) * 2001-01-09 2002-07-11 Siemens Aktiengesellschaft Of Munich Method for double-ended line qualification and monitoring of xDSL links

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EP1695534A1 (en) 2006-08-30
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