Codecs are algorithms used to compress and decompress voice data in VoIP systems. They play a vital role in converting analog voice signals into digital information for transmission over the Internet. They offer different levels of audio quality and bandwidth usage. For example, G.711 provides high-quality audio but requires more bandwidth, while G.729 compresses data to save bandwidth at the cost of slightly reduced audio quality. VoIP providers typically offer multiple codec options, allowing businesses to choose the one that best balances sound quality and network performance based on their needs.
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