---3-in-1 device ---high-speed DSL modem ---wireless G access point ---4-port Ethernet router ---built-in QoS engine STA-504W is ... :PAP, CHAP, MS-CHAP NAT, NAPT, DNS, DDNS, DHCP Server UPnP, Virtual Server, DMZ SIP, H323 ALG Wireless Features Complies with IEEE ... -through QoS IP Type of service(ToS),DSCP,802.1p Device Management HTTP, TELNET, Console Administration and operation software (-rmware) ...