How VoIP Works
VoIP, which according to PCMag stands for Voice over IP, allows people to speak to each other or share other audio over the Internet or private digital networks. This technology can connect people over a variety of modern digital devices.
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Digital Sampling
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VoIP uses a technique called sampling to convert audio into highly compressed digital data, according to Packetizer. An algorhythm known as a CODEC, or compressor/de-compressor, compresses the audio for storage or transportation and de-compresses sampled data back into audio.
Data Transfer
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VoIP transfers digital signals over the network a few pieces at a time in groupings known as packets, according to Packetizer. Each packet may contain from 10 to 30 milliseconds of audio data. Error correction methods such as forward-error correction and packet-loss concealment maintain the integrity of the data stream even if a few packets become lost in transmission.
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Hardware
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VoIP conveys digital signals not only between computers but also among a variety of digital communications devices such a digital handsets or Bluetooth-enabled wireless phones, according to PCMag. Even traditional telephones can work with VoIP with the aid of a device called an ATA, or analog telephone adaptor.
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