... . It adopts high-powered industrial 32-bits CPU and embedded real time operating system. It supports RS232 (or RS485/RS422), Ethernet and ... upgrade, import and export configure file. Support NTP, RTC embedded. Support mulitiple DDNS provider service. Support VLANs, MAC Address ... , NAT, DMZ host, URL block, QoS, ttraff, statistics, real time link speed statistics etc. Full protocol support, such as TCP ...