User's Manual

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3.5.11 DSP
This page mainly completes voice configuration.
CODEC: select the prefer CODEC; support ulaw, alaw, G729 and G7231 5.3/6.3
Signal Standard: Signal standard for different area.
Handdown Time: Hand down detects time.
Input Volume: Handset input volume.
Output Volume: Handset output volume.
Handfree Volume: Hand free volume
G729 Payload Length: G729 payload length
VAD: Enable/disable Voice Activity Detection
3.5.12 VPN
This page is VPN setting page, the IP phone support the VPN with UDP and L2TP
protocol .The parameters is as below
VPN IP： After VPN registered successfully, VPN server will give an IP aggress