Saturday, November 04, 2006

A ringtone is the sound made by a telephone to indicate an incoming call. The term is most often used to refer to the customisable sounds available on mobile phones. The facility was originally provided so that people would be able to determine when their phone was ringing when in the company of other mobile phone owners; newer phones let to associate a ringtone for each phonebook entry. Newer phones can use short pieces of music as ring tones, and the sale of these has become a major sector of the mobile music industry. New UMTS phones introduced new generation ringtones, giving also the possibility to associate a ringtone for each incoming call.

Ringtones advertising campaigns have become hugely popular, though they have also attracted a great deal of criticism.

A phone only rings when a special "ringing signal" is sent to it. For regular telephones, the ringing signal is a 90-volt 20-hertz AC wave generated from the switch that the telephone is connected to. For mobile phones, the ringing signal is a specific radio-frequency signal.
Contents
1 Types of ring tone
1.1 Monophonic
1.2 Polyphonic
1.3 Music ring tones
2 Popularity
3 External links