SPA112, VoIP Telephone Adapter/SIP ATA w/ 2-FXS Ports. Fast Ethernet, IPv4, IPv6, ARP, DNS, SRV, DHCP, PPPoE, ICMP, TCP, UDP, RTP, RTCP, 802.1p, SNTP, SIP, G.711, T.38, 1 x WAN, 2 x RJ-11 FXS, 5 W, 153 g, Black