Using GPRS(General Packet Radio Service) permanent on-line,the correspondence speed higher superiority,the system realized the monitoring center and the vehicle carries between the terminal the information real-time alternately.
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- 利用GPRS(General PacketRad io Service)永久在線(xiàn)、通信速率高等優(yōu)勢,系統實(shí)現了監控中心與車(chē)載終端之間信息的實(shí)時(shí)交互。