... 3G: UMTS WCDMA HSPA Housing: Metal VPN: Pptp, L2tp, Ipsec and Gre Interface: RS232, RS485, Ethernet Port H101-R GPS+WCDMA ROUTER ... online detect, auto redial when offline to make router always onlineEthernet port: 1.5KV magnetic isolation protectionRS232/RS485 ... Support link disconnection when timeout Support APN/VPDN Support wireless video monitoring and dynamic picture transfer Support DHCP server ...