2.5G GPRS Industrial Routers PPP Client and PPP server,VPN ( ... . Dual Band EGSM 900 and GSM 18002. GPRS multi-slot class 103. GPRS data downlink transfer: max. 85.6 kbps4. GPRS ... kbps5. Coding scheme: CS-1, CS-2, CS-3 and CS-46. CSD transmission rates: 2.4, 4.8, 9.6, 14 ... to GSM Phase 2/2+9. Class 4 (2W) at EGSM 90010. Class 1 (1W) at GSM 180011. Group 3: Class 1, Class 2 B. Hardware System1 ...