This object reports the signal strength, in dBm, of the connection to a specific remote station. An admin diagnosing spotty connectivity for a mobile unit checks this value to determine whether weak RF signal, rather than a configuration or hardware fault, explains the poor link quality. If ciscoUrwbStaSignal for an onboard unit drops sharply as a train moves through a tunnel or dense area, the admin would recognize that as an expected RF propagation issue rather than an equipment failure.