One embodiment is a system including a data collector located in a cable network for capturing multi-tone signals traversing the cable network; a data repository located in a cloud network and having an interface for communicating with the data collector and for storing the multi-tone signals captured by the data collector and network data associated with the cable network; and a central server including a memory element storing Predictive Services Management (PSM) algorithms comprising instructions and associated data and a processor operable to execute the PSM algorithms. The central server is configured for detecting a fault in the cable network and identifying a segment associated with the fault; determining a maximum tap magnitude for the fault; calculating an aggregate tap magnitude for the fault; and classifying a severity of the fault based at least in part on the maximum tap magnitude and the aggregate tap magnitude.

A channel detection method for an echo canceller of a communication device is provided. The method includes the following steps. A first detection signal is transmitted to an end of a channel coupled to the communication device. A plurality of taps corresponding to a reflected signal of the first detection signal are received by an echo canceller at the end of the channel. The taps corresponding to the reflected signal are compared with a reference value corresponding to each of the taps so as to determine whether each of the taps is larger than or equal to the corresponding reference value. When the tap is determined to be larger than or equal to the reference value corresponding to the tap, the tap and a position of the tap are recorded.

A channel detection method for an echo canceller of a communication device is provided. The method includes the following steps. A first detection signal is transmitted to an end of a channel coupled to the communication device. A plurality of taps corresponding to a reflected signal of the first detection signal are received by an echo canceller at the end of the channel. The taps corresponding to the reflected signal are compared with a reference value corresponding to each of the taps so as to determine whether each of the taps is larger than or equal to the corresponding reference value. When the tap is determined to be larger than or equal to the reference value corresponding to the tap, the tap and a position of the tap are recorded.

Systems and methods provide for a network test that by capturing in-phase values of a reflected signal off a transmission medium or irregularity therein. The in-phase values are converted to time-domain, which is then halved and converted back to the frequency domain to identify calculated quadrature values associated with the measured in-phase values. The measured in-phase values and calculated quadrature values may be used to determine impedance reflection/transmission characteristics of transmission medium or an irregularity therein. The measured in-phase values and calculated quadrature values may be used to determine if the transmission medium is minimum phase.

Methods and systems provide for using echo measurements, to detect cable faults in cables of vehicular communication networks.

Methods and systems provide for using echo measurements, to detect cable faults in cables of vehicular communication networks.

An Ethernet transceiver includes physical-layer (PHY) circuitry and a signal-loss detector. The PHY circuitry is configured to receive a signal from a peer transceiver, to process the received signal in a series of digital PHY-level processing operations, and to output the processed signal for Medium Access Control (MAC) processing. The signal-loss detector is configured to receive, from the PHY circuitry, a digital version of the received signal, and to detect a signal-loss event based on an amplitude of the digital version of the received signal.

An Ethernet transceiver includes physical-layer (PHY) circuitry and a signal-loss detector. The PHY circuitry is configured to receive a signal from a peer transceiver, to process the received signal in a series of digital PHY-level processing operations, and to output the processed signal for Medium Access Control (MAC) processing. The signal-loss detector is configured to receive, from the PHY circuitry, a digital version of the received signal, and to detect a signal-loss event based on an amplitude of the digital version of the received signal.

A testing of a transmission path of a cable connection between a first position and a second position is provided. Test signals are transmitted via the transmission path, and a transfer function is determined by evaluating the test signals. In order to assess the properties of the transmission path, the transfer function is transformed to an impulse response and the echo power of the transmission path is evaluated by analyzing the impulse response.

A testing of a transmission path of a cable connection between a first position and a second position is provided. Test signals are transmitted via the transmission path, and a transfer function is determined by evaluating the test signals. In order to assess the properties of the transmission path, the transfer function is transformed to an impulse response and the echo power of the transmission path is evaluated by analyzing the impulse response.