A means of proactively detecting whether a node on an Ethernetnetwork can transmit a signal without risk that it will collide with other traffic on the network.
Avoiding Interference in the 2.4-GHz ISM Band As more and more companies produce products that use the 2.4-GHz portion of the radio spectrum, designers have had to deal with increased signals from other sources. Regulations governing unlicensed parts of the spectrum state that your device must expect interference.