IP Telephony Codecs Defined and Explained
A Codec (coder-decoder) is a a piece of software that is used to compress or convert an analogue voice signal into a digitally encoded version that is ready for transmission. Once the data has been received, the receiving codec will convert the digitally encoded version of the voice signal, back into an analogue signal. Codecs, and the associated call quality can vary significantly following compression and transmission, which offers the organisations using them the flexibility to choose a codec that allows them to optimise the bandwidth and computational power that they have available.
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