Zyxel P-662H-I, Black Zyxel P-662H-I. DSL specification: ANSI T1.413 Issue 2, ITU G.992.1 G.dmt, ITU G.992.2 G.lite, ITU G.994.1 G.hs, ITU ADSL2 G.992.3,.... Management protocols: SNMP, Telnet, FTP/TFTP. Firewall security: Denial-of-Service (DoS) protection, Distributed Denial-of-Service (DDoS) protection, Authentication method: AES, VPN support: - NETBIOS pass-through for IPSec - IPSec VPN keep-alive - IPSec NAT Traversal - IPSec PKI. Product colour: Black. Antenna gain level (max): 5 dBi