Dual SIM redundancy for continuous cellular connections ;supports 2G/3G/4G.
VPN tunnel: DMVPN/IPSec/OpenVPN/PPTP/L2TP/GRE.
Supports 802.1Q VLAN Trunk.
Supports PPPoE Bridge (IP Passthrough).
Supports Modbus gateway (Modbus RTU/ASCII to Modbus TCP).
Auto reboot via SMS/Caller ID/Timing.
Supports RobustLink (Centralized M2M management platform,to remote monitor, configure and update firmware ).
Supports RobustVPN (Cloud VPN Portal, to provide easy and secure remote access for PLCs and machines ).
Flexible Management methods: Web/CLI/SNMP/RobustLink.
Firmware upgrade via Web/CLI/USB/SMS/RobustLink.