Definitions for "Ringing signal"
Any AC or DC signal transmitted over a line or trunk for the purpose of alerting a party at the distant end of an incoming call. The signal can operate a visual or sound-producing device.
A continuous 20Hz 90VRMS signal. The 'rings' that one hears from a phone call are a result of the switching circuitry connecting and disconnecting from this signal, usually ON for one second, OFF for three seconds.
a sinusoidal burst signal that decays to zero