Bivocom - Model TR210 Series -IP Modems(DTU)

1x RS232, 1x RS485 (Or RS422), 5x I/O. Transparent data transfer, with built in standard TCP/IP stack. Multi data centers (up to 5) and TCP server, able to access center with domain name and IP address. TCP heartbeat link detection, keep device always online. APN/VPDN.  SMS backup, data will be transferred by SMS when TCP/UDP disconnects. Rich online and offline trigger modes: SMB, Ring, Data (Sent through serial port). Hardware and software auto inspection technology, enable operation fault auto repairing.