Abstract: In one example embodiment, a system including a plurality of ports, a plurality of vectoring processors, each of the plurality of vectoring processors having a coefficient memory storing vectoring coefficients corresponding to different victim line and disturber line combinations of a plurality of communication paths connected to the plurality of ports, at least one victim line associated with two of the plurality of vectoring processors and a controller, the controller being configured to assign the victim line and disturber line combinations to the memories based on loads associated with the vectoring coefficients.

Abstract: In one example embodiment, a system including a plurality of ports, a plurality of vectoring processors, each of the plurality of vectoring processors having a coefficient memory storing vectoring coefficients corresponding to different victim line and disturber line combinations of a plurality of communication paths connected to the plurality of ports, at least one victim line associated with two of the plurality of vectoring processors and a controller, the controller being configured to assign the victim line and disturber line combinations to the memories based on loads associated with the vectoring coefficients.

Abstract: A crosstalk cancellation device cancels crosstalk noise of at most M disturbing communication lines in a victim communication line forming part of a vectoring group. The crosstalk cancellation device gradually decreases the cancellation depth of a cancelled disturbing communication line in the victim communication line upon a crosstalk noise variation in the vectoring group requiring cancellation of crosstalk noise of a not yet cancelled disturbing communication line in the victim communication line.

Abstract: The invention discloses a method to control a resynchronization trigger in an access device (40). A management station (43) is connected to the access CPE (40) via a control channel (50). The CPE is able to receive a control signal including application information and to calculate the synchronization trigger where the application information is used.

Abstract: A crosstalk cancellation device cancels crosstalk noise of at most M disturbing communication lines in a victim communication line forming part of a vectoring group. The crosstalk cancellation device gradually decreases the cancellation depth of a cancelled disturbing communication line in the victim communication line upon a crosstalk noise variation in the vectoring group requiring cancellation of crosstalk noise of a not yet cancelled disturbing communication line in the victim communication line.

Abstract: A method for network analysis in an access network (1) in connection with a data transmission network, in particular an xDSL network, with a plurality of subscriber lines (4.1-4.3). The method comprising the step of collecting data on physical layer operational parameters ({?oi}) of at least one subscriber line (4.1-4.3) and the steps of simulating a behavior of higher network layers based on said collected data when deploying at least one application (6.1-6.3) on said subscriber line (4.1-4.3); generating data on higher layer performance parameters for said application (6.1-6.3); and generating an advice signal (AS) based on said data and indicative of the compatibility of the physical layer/application couple with predetermined Quality-of-Service (QoS) requirements for said application (6.1-6.3). Thus, the proposed method provides network operators with information concerning the question if a given service application (6.1-6.

Abstract: The invention discloses a method to control a resynchronization trigger in an access device (40). A management station (43) is connected to the access CPE (40) via a control channel (50). The CPE is able to receive a control signal including application information and to calculate the synchronization trigger where the application information is used.

Abstract: The present invention relates to a wired transmission line testing method for determining at least one physical characteristic of a wired transmission line where the wired transmission line is coupled between a first line transceiver device and a second transceiver device. The wired transmission line testing method first comprises the steps of a first transceiver sending a first known excitation signal over the wired transmission line and subsequently the step of the first transceiver and the second transceiver both generating a first representation of a received signal respectively including reflected or forwarded portions of the known excitation signal and third a processing part deriving at least one physical characteristic of the wired transmission line based on the first representations generated by the first transceiver and the second transceiver.

Abstract: A method for network analysis in an access network (1) in connection with a data transmission network, in particular an xDSL network, with a plurality of subscriber lines (4.1-4.3). The method comprising the step of collecting data on physical layer operational parameters ({?ci}) of at least one subscriber line (4.1-4.3) and the steps of simulating a behaviour of higher network layers based on said collected data when deploying at least one application (6.1-6.3) on said subscriber line (4.1-4.3); generating data on higher layer performance parameters for said application (6.1-6.3); and generating an advice signal (AS) based on said data and indicative of the compatibility of the physical layer/application couple with predetermined Quality-of-Service (QoS) requirements for said application (6.1-6.3). Thus, the proposed method provides network operators with information concerning the question if a given service application (6.1-6.

Abstract: A method to detect a defective or missing filter at a customer's side between a first connection having a first frequency spectrum and a second connection having a second frequency spectrum and using the same physical transmission medium as the first connection between said customer and a central office equipment (DSLAM), comprises the steps of generating and transmitting at least one first type signal within said first frequency spectrum simultaneously performing quality measurements on said second connection in said second frequency spectrum, analyzing said quality measurements for thereby concluding the presence or not of the correct functionality and presence of said filter. An apparatus for performing the method is as well disclosed.

Abstract: A method for testing the physical layer of a broadband installation at subscriber's house by means of a broadband test device or network analyzer (NA) coupled to the subscriber's house through a broadband connection (BB). The broadband connection is preferably a DSL connection through which the network analyzer performs measurements on the broadband installation. An end-user at the subscriber's house can dialog with the network analyzer through a narrowband responder device, preferably an intelligent voice responder (IVR). The dialog consists of information received from the end-user and translated by the responder device into input control for the network analyzer and of output control from the network analyzer translated by the responder device into instructions towards the end-user. A telecommunication test system and a responder device using this method are also described.

Abstract: The present invention relates to a method for localizing a defect in a in-house access plant operable to carry broadband communication services. A method according to the invention further comprises the steps of: instructing a user of said in-house access plant to manipulate in-house equipment through an automated and interactive communication session, determining timing information for each manipulation that is carried out, performing remote quality measurements over said in-house access plant while said in-house equipment are being manipulated, identifying from said timing information a particular manipulation that is time-correlated with a substantial change in measured quality, thereby identifying a particular piece of in-house equipment that has been manipulated and in the neighborhood of which said defect is located. The present invention also relates to an analysis tool such as a network analyzer, a communication unit such an intelligent voice responder or a web server, and to a diagnostic system.