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Model	DSL-522B/522T
DEVICE INTERFACES	+ RJ-11 ADSL port + RJ-45 10/100BASE-TX Ethernet LAN port with auto MDI/MDIX + 1 USB
ADSL STANDARS	+ Full-rate ANSI T1.413 Issue 2 + ITU-T G.992.1 (G.dmt) Annex A + ITU-T G.992.2 (G.lite) Annex A + ITU-T G.994.1 (G.hs)
ADSL2 STANDARDS	+ ITU-T G.992.3 (G.dmt.bis) Annex A/L/M + ITU-T G.992.4 (G.lite.bis) Annex A + Annex M compatible: up to 2Mbps upstream
ATM/PPP PROTOCOLS	+ Multiple protocol encapsulation over AAL5 + Bridged and routed Ethernet encapsulation + Logical Link Control (LLC) encapsulation + VC-based multiplexing + RFC 1483, RFC 2684 + MAC Encapsulated Routing RFC 1483 MER + ATM Forum UNI3.1/4.0 PVC Up to 8 PVCs + Multiple services, PPPoE, bridge, MER over single PVC: optional + ATM Cell Format ITU-T Rec. I.361 + ATM Adaptation Layer Type 5 (AAL5) + ITU-T I.610 OAM Principles & Functions include F4/F5 loopback + ATM QoS (Traf�c Shaping) UBR, CBR, rt-VBR, nrt-VBR + PPP over ATM RFC 2364 + PPP over Ethernet RFC 2516 + PPP Link Control Protocol (LCP) RFC 1661 + Internet Protocol Control Protocol (IPCP) RFC 1332 + PPP Authentication Protocol (PAP) RFC 1334 + PPP Challenge Handshake Authentication Protocol (CHAP) RFC 1994 + Microsoft PPP CHAP extensions RFC 2433
NETWORK PROTOCOLS	+ Ethernet to ADSL Self-Learning Transparent Bridging + Internet Control Message Protocol (ICMP) RFC 792 + IP Static Routing + Routing Information Protocol (RIP, RIPv2) RFC 1058, RFC 1723 + Network Address Translation (NAT) RFC 1631 + Virtual Server, Port Forwarding + NAT ALGs (optional): MSN/AOL/Yahoo Messenger, FTP, SNMP, + CUSEEME, Real Audio, MIRC, SIP, ICQ, games + DHCP server/client/relay RFC 2131 + DNS Relay, DDNS + IGMP proxy v.3 supported + Simple Network Time Protocol (SNTP)
FIREWALL	+ NAT �rewall + MAC Filtering + Packet Filtering IP/ICMP/TCP/UDP + Stateful Packet Inspection (SPI) + + Intrusion Detection + System/Log + User Authentication PAP RFC 1334 User Authentication CHAP RFC 1994 + DMZ
VPN	IPSec/PPTP/L2TP pass-through
QOS	+ Traf�c Prioritization/Classi�cation: + Port-based priority + 802.1p (8 queues) + Di?serv TOS + Application port-based priority + User-de�ned priority (TCP/UDP/ICMP) + 4 priority queues per PVC
TRAFFIC SHAPING	+ Bandwidth Control (64K/128K/256K/512K) + PVC/VLAN port mapping (bridge mode) + IGMP snooping 32 multicast groups
Dimension	120 mm (L) x 105 mm (W) x 32 mm (H)
DIAGNOSTIC LEDs	+ Power + Status + DSL Link/Activity + Ethernet Link/Activity
POWER SUPPLY     BH: 12 TH�NG	+ 5VDC/1.2A switching power adapter or 9VAC/1A linear power adapter + Dying Gasp (optional)