timeout.
Note:
if you enable Auto Answer function, this feature will be
not available.
Others
Return Code When Refuse: Allows user to assign
specific code as return code to SIP server when an
incoming call is rejected.
Auto Answer Delay: To configure delay time before
an incoming call is automatically answered.
Answer Mode: to setup the default auto answer
mode-audio or video.
Early DTMF: To enable or disable early DTMF
Multicast codec: To choose different multicast codec
Direct IP: To enable or disable direct IP call.
7.9 Phone-> Audio
Sections
Description
Echo Canceller
Echo Canceller: To remove acoustic echo from a voice
communication in order to improve the voice quality .
VAD(Voice Activity Detection): Allow IP phone to detect
the presence or absence of human speech during a call.
When detecting period of “silence”, VAD replaces that
silence efficiently with special packets that indicate
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