Yealink VC110, Administrator'S Manual

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Administrator‘s Guide for Yealink VC110 Video Conferencing Endpoint
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2. Select the desired value from the pull-down list of DTMF Type.
3. Click Confirm to accept the change.
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.
The audio codec that the endpoint uses to establish a call should be supported by the
server. When placing a call, the endpoint 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 endpoint:
Codec Algorithm Bit Rate Sample Rate Reference
G.722.1c
G.722.1
48 Kbps 32 Ksps RFC 5577
G.722.1c 32 Kbps 32 Ksps RFC 5577