Device for Receiving Signals from a Network Cable

A method of adding or removing a device from a network system, the network system comprising a plurality of pairs of devices, and a power sourcing equipment for supplying power to the devices via network cables,

• wherein the devices of each pair are configured to establish a point-to-point network connection with one another via an associated one of the network cables, by each device of the pair executing an initial training cycle so data received via the network cable is readable by the device,
• wherein each device comprises a channel equalizer and a monitoring device, wherein the channel equalizer is configured to continuously adapt to characteristics of the associated network cable by continuous training of the channel equalizer to help maintain the point-to-point network connection, wherein the monitoring device is configured to monitor signals received from the associated network cable for out-of-range signals, to temporarily interrupt the continuous training of the channel equalizer when out-of-range signals are detected, and to resume the continuous training once the out-of-range signals are no longer detected without executing the initial training cycle again,
• wherein each device is powered by a constant current or constant power drawn from the power sourcing equipment via the network cables,
• wherein the method comprises:
• adding or removing one of the devices from the network system, thereby adding or removing the current or power drawn by that device, which causes a disturbance in the signals the other devices receive from their associated network cables;
• detecting the disturbance as out-of-range signals at the monitoring devices of the other devices;
• temporarily interrupting the continuous training of the channel equalizers of the other devices in response to detecting the disturbance as out-of-range signals, and resuming the continuous training of the channel equalizers of the other devices once the out-of-range signals are no longer detected without executing the initial training cycle again.