... transmission, AT Command, RS232/485, remote configuration and control, with embedded Operation System, such as LINUX and WINDOWS OS, can be ... time, etc. It has been used for data communication/acquisition, remote control and minotring, M2M appliation, etc. Detailed information A. ... TCP/IP protocol stack2. Adopt smart online keeping technology to make sure that IP MODEM is always online3. Support RSA and ...