■ 5 modulo 12 frequency: mobile, China Unicom, Telecom 4G high-speed access, while supporting mobile, China Unicom 3G and 2G access;
■ Based on embedded Linux system development, with high reliability;
■ Support RNDIS remote network driver interface, the computer can connect to the Internet via USB to access the device;
■ Support 4 network connections online at the same time, support TCP and UDP;
■ Each connection supports 10KB serial port data cache. When the connection is abnormal, the cache data can be selected without loss.
■ Support for sending registration package/heartbeat packet data;
■ Support remote SMS setting module parameters;
■ Support multiple working modes: network transparent transmission mode, HTTPD mode;
■ Support for basic instruction sets;
■ Support socket distribution protocol, which can send data to different Sockets;
■ Support FTP to update the protocol to facilitate remote update of client devices;
■ Support FTP self-renewal protocol to keep the firmware up to date;
■ Supports the RFC2217 function, which can dynamically modify the serial port parameters of the module from the network;
■ Compatible with our CM-GPRS module, users can directly replace it.