Product G1110 1FXS 1WAN+1LAN VoIP Router G1111 1FXS 1FXO 1WAN+1LAN VoIP Router G1111P 1FXS 1PSTN Relay 1WAN+1LAN VoIP Router G1120 2FXS 1WAN+1LAN VoIP Router G1121 2FXS 1FXO 1WAN+1LAN VoIP Router Feature " Support 1 port or 2 ports VoIP calls simultaneously. " Depends on different needs, we offer FXS and FXO/PSTN interface. " Compliant with SIP / H.323 VoIP standard. " 1 WAN + 1 LAN / 1 WAN + 3 LAN " Register up to 4 SIP Proxy Server or H.323 Gatekeeper simultaneously. " Can be register to server by all ports share single account or each port using different account. " Routing different VoIP server or peer to peer connection by different routing setup. " IP's configuration of WAN / LAN can be programmed via phone sets. " Support Hot-Line. " Support connected type : Static IP, dynamic IP from DHCP, PPPoE. " Friendly Web UI " Support Audio codec : G.711a-law, G.711u-law, G.723.1, G.726, G.729, G.729A " LED signal showing status of power, line, VoIP, and registerd. " Support APS(Auto Provision Server) " Support QoS for VoIP and G.168 (Digital network echo canceller). " Support NAT in Broadband Route, Firewall, DHCP Server.