Voice Codec:G.711,G.723.1,G.729A/B

VAD(voice Activity Detection)with

CNG(comfort noise generation)and PLC
(packet loss concealment), Dynamic Jitter
Buffer

Web/Telnet configuration

PPPoE,DHCP Client/Server

Call hold,call waiting,call forward do
not disturb,direct IP calling Blind
transfer attended transfer.

3-way conference