Internet Router with VoIP Gateway 4 10/100/1000BASE-T Gigabit Ethernet port (LAN), 1 10/100/1000BASE-T Gigabit Ethernet port (WAN) 2 FXS RJ-11 port, 1 lifeline RJ-11 port, 1 USB port 802.11 b/g/n Support Call Control Protocol SIP NAT, DHCP server/relay