... .Build in TCP,UDP,IP,ICMP,DNS network protocol;4.Embedded complete PPP,TCP,IP protocol stack;5.Supports ... Multipoint to Multipoint Communication Mode;8.Supports up to 4 DNS and static data service center IP address;9.“ ... realize data transmission between com port and internet;10.4 Analog inputs(0 to 5V or 0 to 20mA), 2 ... Digital Inputs(NC,NO Dry Contact) and 2 Digital Outputs ( ...