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Ringtone 19 [With Free Download Link]

148 views · Published 5 August 2018 · 0:36 · Indexed 28 September 2026

Channel: Minim Ringtones · 2018 · Entertainment

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Fixed phones of the late 20th century and later detect this ringing current voltage and trigger a warbling tone electronically. Mobile phones have been fully digital since the early 1990s second-generation ("2G") devices, hence are signaled to ring as part of the protocol they use to communicate with the cell base stations.

While the sound produced is still called a "ring",[2] some phones electronically produce a warbling, chirping, or other sound. Variation of the ring signal can be used to indicate characteristics of incoming calls. For example, ringing bursts with a shorter interval between them might be used to signal a call from a given number.

In POTS switching systems, ringing is said to be "tripped" when the impedance of the entire telephone line (local loop) is reduced when the telephone handset is lifted off the hook. This signals that the telephone call has been answered. 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. In Australia and the UK, the standard ring cadence is 400 ms on, 200 ms off, 400 ms on, 2000 ms off. These patterns may vary from region to region, and other patterns are used in different countries around the world. Some central offices offer distinctive ring to identify one of multiple telephone numbers assigned to the same line, a pattern once widely used on party line (telephony).

In many systems, including North America Bellcore standards, Caller ID signals are sent during the silent interval between the first and second bursts of the ringing signals.

The caller is informed about the progress of the call by the audible ringing signal, often called ringback tone. Power ringing and audible ringing are not generally synchronized.

Seven different gong combinations for the "C" type ringer were included in the model 500 and 2500 landline telephone sets. These gongs provided "distinctive tones" for hearing-impaired customers and also made it possible to distinguish the specific telephone that was ringing when several telephones were placed in close proximity.[3] A "Bell Chime" was also offered, which could be set to sound like a doorbell or to ring like a standard telephone.

While rings, ringers, ring signals, or what might be viewed as the call signals which are the predecessors of ringtones, date back to the beginnings of telephony, modern ringtones appeared in the 1960s and have expanded into tunes and many customizable tones or melodies.[4] Arguably the first ringtone (in the modern sense) appeared in the movie Our Man Flint in 1966, where the head of the secret government agency had a red phone that connected directly to the President and rang with a distinctive musical ringtone.[5]


A tone ringer IC: ITT SAA 1094
Following a 1975 FCC ruling which permitted third-party devices to be connected to phone lines, manufacturers produced accessory telephone ringers which rang with electronic tones or melodies rather than mechanical bells. People also made their own ringers which used the chip from a musical greeting card to play a melody on the arrival of a call.[6] One such ringer, described in a 1989 book, even features a toy dog which barks and wags its tail when a call arrives.[7] Eventually, electronic telephone ringers became the norm. Some of these ringers produced a single tone, but others produced a sequence of two or three tones or a musical melody.[8] Some novelty phones have a ringer to match, such as a duck that quacks or a car that honks its horn.

Polyphonic ringtone technology dates back to 1999, when the Yamaha MA-1 sound chip was introduced, including four 2-op FM synthesis channels.[9] Ringtones played on the MA series chips are in the MIDI-based synthetic music mobile application format (SMAF). It was succeeded by the MA-2 in 2000, which includes 16 channels with support for ADPCM samples, and the MA-3 in 2001 which includes 32 FM channels and 8 wavetable channels. One of the first software-based polyphonic synths included on phones was miniBAE, developed by Thomas Dolby's audio technology company Beatnik.[10] It is an optimized version of Beatnik Audio Engine, which was previously used in products such as WebTV. The first phone to include this synth was the Nokia 3510, released in 2002

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