1.Wireless USB modem 2.WCDMA/HSPA 850/1900/2100MHz 3.Support SMS,Call, ... command interface5.Always-On-Line6.Real-time Clock (RTC)7.Internal hardware and software watchdog8.Local and remote configuration over the ... and MT CB and PDU mode,support digital,voice,sms,fax transmissionCSD maximum up to 14.4 kbps Frequency 850/1900 ...