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In electrical circuits, ringing is an oscillation of a voltage or current.Ringing can be undesirable because it causes extra current to flow, thereby wasting energy and causing extra heating of the components; it can cause unwanted electromagnetic radiation to be emitted [citation needed]; it can increase settling time for the desired final state; and it may cause unwanted triggering of ...
Ringing is a telecommunication signal that causes a bell or other device to alert a telephone subscriber to an incoming telephone call. Historically, this entailed sending a high-voltage alternating current over the telephone line to a customer station which contained an electromagnetic bell.
The telephone exchange immediately removes the ringing signal from the line and connects the call. The ringing pattern is known as ring cadence, in which the high voltage ring current is switched on and off to create the pattern. In North America, the standard ring cadence is two seconds of ringing followed by four seconds of silence.
Ringing (signal), unwanted oscillation of a signal, leading to ringing artifacts; Vibration of a harmonic oscillator. Bell ringing; Ringing (telephony), the sound of a telephone bell; Ringing (medicine), a ringing sound in the ears
The main cause of ringing artifacts is overshoot and oscillations in the step response of a filter.. The main cause of ringing artifacts is due to a signal being bandlimited (specifically, not having high frequencies) or passed through a low-pass filter; this is the frequency domain description.
Ringback, the ringing signal in telephony used to recall an operator or customer Ringing tone , also ringback tone, the audible ringing that is heard by the calling party after dialing Ringback number , a number used by phone companies to test whether a telephone line and phone number is working
Ringing tone is often also called ringback tone. However, in formal telecommunication specifications that originate in the Bell System in North America, ringback has a different definition. It is a signal used to recall either an operator or a customer at the originating end of an established telephone call. [2]
A signal tone or signalling tone is a steady or pulsating periodic signal typically in the frequency range of sound for indicating a condition, communication protocol state, or serve as an audible warning. It may be composed of multiple frequency components, or could be a pure tone.