... flexible, easy to use and managementEmbedded PPP, TCP/IP stack2) Enhanced functionsIndustrial design for different application environments Industrial ... spread;Built-in multiple communication protocols PPP, TCP/IP, UDP/IP Hongdian DDP protocol, ensuring the data channel ... each data service centerFlexible data communication Supports TCP/IP Server/Client, UDP/IP, DDP, SMS, AT Self-define transparent or ...