support sip and h.323 one 10/100 base-t wan port one 10/100 base-t lan port 1 fxs interface (rj-11), used to connect 1 telephones 1 line port for pstn life-line function support codec: g.711a/u ,g.723.1(5.3k/6.3k),g.729a(8k),g.726(16k,24k,32k,40k) cng(comfort noise generation) g.168 (echo cancellation) vad(voice activity detection) supporting dhcp client/static ip address allocation plan self-adaptive jitter cache ensures smooth voice function lost-packet compensation guarantee mechanism provides a better voice quality. built-in internet gateway function supporting nat (network address translation) and napt and dhcp server, used for the dynamic address allocation plan of lan devices danny@vnetphone.com www.vnetphone.com skype:cnwxdkj msn:szwxdkj@hotmail.co