Automatic testing/analysis of local loops of telecommunications networks includes obtaining bits-per-tone data for a local loop of a telecommunications network and generating a bit value string from the bits-per-tone data. The bit value string is then analyzed to determine whether it includes a bit pattern indicative of an impairment of the local loop. Further approaches for automatically testing local loops of telecommunications networks include obtaining attenuation data for multiple tones carried by the local loop and determining whether the attenuation data falls below thresholds for providing a service using the local loop.

The present invention discloses a method and an apparatus to automatically remove crosstalk, which can automatically mask G.fast frequencies that will produce crosstalk between an existing transmission line and each port of a DPU/DSLAM equipment without unnecessary manual operation, to automatically remove crosstalk interference between G.fast and the existing transmission line, and is applicable for various generic interfaces. According to the present invention, the installation time is greatly reduced, human errors are also reduced, and the installation can be done correctly by ordinary technicians, which is advantageous to the promotion of G.fast systems.

Control of a digital communication system having a plurality of communication lines on which signals are transmitted and received is implemented using a variety of methods and systems. According to one embodiment of the present invention, a method is implemented where the signals are affected by interference during transmission and each of the communication lines has at least one transmitter and at least one receiver. A model is created of the interference characteristics due to the signals carried on the communication lines. Interference characteristics for a line are determined based on the model and actual signals carried on other communication lines different from the line for which the characteristics are being determined. Actual interference is compensated for on the communication line using the determined interference characteristics.

Disclosed is a method for mitigating crosstalk performed by a network node of a wireless communication network operable in a base station system of the wireless communication network, the base station system comprising an intermediate radio unit, IRU, a baseband unit, BBU, connected to the IRU and a plurality of radio heads, RHs, connected to the IRU via a plurality of metallic conductors.

According to an embodiment, a DSL transceiver includes a power mode controller and a transmitter. The power mode controller is configured to set the DSL transceiver in a low power mode and move the DSL transceiver out of the low power mode responsive to the DSL transceiver receiving data. The transmitter is configured to transmit data only on a first group of sub-carriers when the power mode controller is moving the DSL transceiver out of the low power mode, the first group of sub-carriers being a subset of the sub-carriers available to the DSL transceiver for transmission.

Methods, devices and systems of supporting discontinuous operation in communication systems using vectoring Methods, devices and techniques are disclosed where vectoring is adapted to lines becoming inactive and active, for example in a discontinued operation. In some embodiments, the vectoring is modified based on already present coefficients.

A method for initialization of a group of customer premises equipment devices (CPEs) during a training that registers capabilities of the CPEs is disclosed, wherein at least one CPE registers late to the training and cannot be registered. The method includes determining capabilities of the CPEs during a joining phase of the training, wherein it is determined whether a CPE device is capable of employing vectoring and placing in a hold status the at least one CPE that registers late by keeping a line active that is coupled to the at least one CPE. The method further includes providing another joining phase after the joining phase to register the at least one CPE that registers late.

Apparatus and methods for providing small cell backhaul are disclosed. A network node that acts as a gateway for a local communication network to a main communication network through a bonded link with the main communication network also provides a wireless communication module with a backhaul communication link to the main communication network through its bonded link. A switch module in the network node switches communication traffic between the local communication network, the wireless communication module and the bonded link to the main communication network. The network node may power the wireless communication module utilizing remote power provided by the main communication network, the local communication network, and/or a local source of power. Apparatus and methods for providing a transparent bonded link through a network access multiplexer are also disclosed, including management of the bonded link and of nodes subtending from the bonded link.

In accordance with an embodiment the method includes temporarily configuring the vector processor with a new set of vectoring coefficients during one or more selected symbol positions; restoring the current set of vectoring coefficients outside the one or more selected symbol positions; obtaining at least one error measure over respectively at least one line of the group of vectored lines during the one or more selected symbol positions; and determining a suitability indication for the new set of vectoring coefficients based on the obtained at least one error measure.

Embodiments of the present invention provide a method, and an apparatus for supporting a non-vector line. The method includes: selecting n non-vector lines T.sub.L from lines that are in an initializing stage, where n is an integer greater than or equal to 1; controlling to perform no further initializing for other lines that are in the initializing stage except the T.sub.L until the T.sub.L fully enters a data transmission stage; and before the T.sub.L enters the data transmission stage, estimating a far-end crosstalk coefficient C.sub.TL-SV from the T.sub.L to a vector line S.sub.V that is in the data transmission stage, where the C.sub.TL-SV is used in signal processing to eliminate far-end crosstalk caused by the T.sub.L to the S.sub.V.