GF-2008W GPRS IP MODEM(DTU) Features 1) Transparent data transmission GF-2008W GPRS IP MODEM(DTU) provides transparent data transmission (RS232 or RS485 interface) for machine to machine connectivity. 2) Non host support Normally, GPRS Modem can be connected to a PC, and then dial an access number manually; it utilizes PC??s OS resources to finish the data transmission and protocol conversion. GF-2008W GPRS IP MODEM(DTU) is a powerful communication terminal in witch the microprocessor, TCP/IP stack and application software are embedded ; it works automatically without host PC. 3) Point to point, and multi-point to point data transmission GF-2008W GPRS IP MODEM(DTU) can be configured working in point to point, multi-point to point and center to multipoint network frames . 4) Always online GF-2008W GPRS IP MODEM(DTU) will automatically attach to GPRS network when the power is on, and then set up one up to ten sockets to the center server.. 5) cost saving toll GF-2008W GPRS IP MODEM(DTU) can work ??always online?? state, and only be charged when data transmitted. 6) High speed Maximum GPRS bandwidth can be 171.2Kb/s, only 40~100Kb/s can be reached at actual application. 7) Simple and flexible to use GF-2008W GPRS IP MODEM(DTU) is a powerful and easy to used device. It is easy to build your own private mobile data network at anywhere. GF-2008W GPRS IP MODEM(DTU) Functions Basic Functions Ease to use, reliable and flexible Support dual band GPRS network ??Optional quad band GSM/GPRS 900/1800MHz?? Always online Real clock Built-in Watch Dog Enhanced Functions Transparent data transmission(serialNet function) Support virtual private data network (VPN) Support DDNS or IP address Continuous and automatic GPRS VPN Management (GPRS Data Tunnel) STK/UTK card configuration Support TTL/RS-232/422/485 interface Voice interface System configuration & maintenance interface Self-diagnostic and alarm output EMC/EMI design Enhanced and widely power supply design Industrial class pluggable terminals interface Industrial design with surge protection