Clear Voice Adapter Features: DMZ port, DHCP support, NAT support, ARP support, Syslog support, DiffServ support, SNTP support, Trivial File Transfer Protocol (TFTP) support, Quality of Service (QoS), port forwarding, IPv4 support Encryption Algorithm: MD5, 256-bit AES Compliant Standards: IEEE 802.3 Network / Transport Protocol: TCP/IP, UDP/IP, ICMP/IP Data Link Protocol: Ethernet, Fast Ethernet