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Codec Preference
Codec is known as Coder-Decoder, it is used for data signal conversion. Set the priority of voice
compression with Priority 1 represents the top priority.
G.729: It is used to encode and decode voice information into a single packet to reduce bandwidth
consumption.
G.711μ-LAW: It is a basic non-compressed encoder and decoder technique. μ-LAW uses pulse
code modulation (PCM) encoder and decoder to convert a 14-bit linear sample.
G.711A-LAW: It is a basic non-compressed encoder and decoder technique. A-LAW uses pulse
code modulation (PCM) encoder and decoder to convert a 13-bit linear sample.
G.726-32: It is used to encode and decode voice information into a single packet to reduce
bandwidth consumption. Currently only supports bit rate with 32Kbps.
DTMF Method: The Inband, RFC 2833 and SIP INFO (RFC 2976) are supported.
Volume Control
Volume control enables you to adjust the voice quality of telephone to the best & comfortable level.
Press "-" the minus sign to reduce either the microphone, speaker's level of your telephone or both.
Press "+", the plus sign to increase either the microphone, speaker's level of your telephone or
both.
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