tone-frequency ringing

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• Ringing — ElectricityIn electrical circuits, ringing is an unwanted oscillation of a voltage or current. It happens when an electrical pulse causes the parasitic capacitances and inductancesFact|date=May 2008 in the circuit (i.e. those that are not part of …   Wikipedia

• Dial tone — For the G.I. Joe character, see Dial Tone (G.I. Joe). A dial tone (known in the British Isles as a dialling tone)[1] is a telephony signal used to indicate that the telephone exchange is working, has recognized an off hook, and is ready to accept …   Wikipedia

• Motorola Minitor — Front view of the Minitor V pager. The Motorola Minitor is a portable, analog, receive only, voice pager typically carried by fire, rescue, and EMS personnel (both volunteer and paid) to alert of emergencies. The Minitor, slightly smaller than a… …   Wikipedia

• Falsing — In telecommunications, falsing describes a decoder detecting a valid input when one is not present. This is also known as a false decode. To make the concepts simpler, this article will discuss analog circuits used before digital signal… …   Wikipedia

• Plain old telephone service — (POTS) is the voice grade telephone service that remains the basic form of residential and small business service connection to the telephone network in most parts of the world. The name is a reflection of the telephone service still available… …   Wikipedia

• Ringtone — For the Weird Al Yankovic song, see Ringtone (song). For the film, see Ringtone (film). A ringtone or ring tone is the sound made by a telephone to indicate an incoming call or text message. Not literally a tone, the term is most often used today …   Wikipedia

• telephone — telephoner, n. /tel euh fohn /, n., v., telephoned, telephoning. n. 1. an apparatus, system, or process for transmission of sound or speech to a distant point, esp. by an electric device. v.t. 2. to speak to or summon (a person) by telephone. 3.… …   Universalium

• Harmonic series (music) — Harmonic series of a string. Pitched musical instruments are often based on an approximate harmonic oscillator such as a string or a column of air, which oscillates at numerous frequencies simultaneously. At these resonant frequencies, waves… …   Wikipedia

• Vibraphone — Infobox instrument name=Vibraphone names=Vibraharp, Vibes image capt=A typical vibraphone color=#FFEC8B classification=Percussion instrument (Idiophone) range= related= musicians= builders= articles=The vibraphone, sometimes called the vibraharp… …   Wikipedia

• Telephone exchange — A telephone operator manually connecting calls with cord pairs at a telephone switchboard. In the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls. A central… …   Wikipedia

• Handbell — Infobox Instrument name=Handbell classification= *Hand percussion *Idiophone range= related= *Bells *HandchimesA handbell is a bell designed to be rung by hand. To ring a handbell, a ringer grasps the bell by its slightly flexible handle mdash;… …   Wikipedia