Vpn router lan standard gigabit ethernet 101001000 mbps lan ports 3 x rj 45 interfaces 1x rj 45 wan 1x usb 20 1x rs 232 serial 1x isdn s0 integrated modem without telephone connection landline and internet suitable for hd telephony voip server function dns server routing udp tcp arp dhcp ipv4 sip rip vrrp lan protocols dhcp arp icmp netbios pppoe snmp ip address allocations dynamic static dhcp support remote management protocol web inte