Telematics 5.0' Vehicle GPS navigation system with GSM/GPRS, WIFI optional, with RS232 outport. suitable for AVL ,FMS ,and Taxi dispatch/Booking application. Support: RS2321(Max. RS2322). support: Remote wakeup system by calling or SMS. Support : Sleep-Wakeup Loop. System run cycle according to Sleep-Wakeup. At sleep status, GSM only run;at wakeup status, CPU, GPS and GSM only run . Customer can modify the cycle by writing the Registry