Yealink CPE80, 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.
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 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