Administrator’s Guide for Yealink VC800 Video Conferencing System
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2. Select the desired value from the pull-down list of DTMF Type.
3. Click Confirm to accept the change.
Codecs
CODEC is an abbreviation of COmpress-DECompress, and is 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/video signal with a minimum number of bits while retaining
quality. This can effectively reduce the frame size and the bandwidth required for audio/video
transmission.
Audio Codecs
The audio codec that the system uses to establish a call should be supported by the server.
When placing a call, the system 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.
The following table summarizes the supported audio codecs on the system:
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