CODEC is an abbreviation of Compress-Decompress, capable of coding or decoding a digital data
stream or signal by implementing an algorithm. The object of the algorithm is to represent the high-
fidelity audio signal with a minimum number of bits while retaining the quality. This can effectively
reduce the frame size and the bandwidth required for audio transmission.
The audio codec that the phone uses to establish a call should be supported by the SIP server.
When placing a call, the IP phone will offer the enabled audio codec list to the server and then use
the audio codec negotiated with the called party according to the priority.
Topics
Supported Audio Codecs
Audio Codecs Configuration
The following table summarizes the supported audio codecs on IP phones:
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