●EDGE/GPRS数据特性：
  Multi slot class 10 (4 Down; 2 Up; 5 Total) Max BR 85.6 Kbps Class B GSM 07.10 multiplexing protocol Coding scheme CS1-CS4 Embedded TCP/IP and UDP/IP protocol stack Edge (model dependant) Multi slot class 12 (4 Down; 2 Up; 5 Total) Max BR Downlink 460.8 Kbps (over RS232) Coding scheme MCS1-MCS9 CSD Max BR 14.4 Kbps SMS MO / MT Text and PDU modes Cell broadcast