... kbps5. Coding scheme: CS-1, CS-2, CS-3 and CS-46. CSD transmission rates: 2.4, 4.8, 9.6, 14.4 kbps, non-transparent, V ... (USSD) support8. Compliant to GSM Phase 2/2+9. Class 4 (2W) at EGSM 90010. Class 1 (1W) at GSM 180011 ... ,200M2. FLASH4MB (Extendable to 16MB)3. SDRAM16MB (Extendable to 64MB)4. E2PROM64KB5. Interface: 10/100M Ethernet Port RS232 serial port (Support ...