thegprscommunicationmoduleiscontrolledbyterminal (e.g.h50 ) firmware。
theactionsaremappedto 3至4 at command，and one PPP process。
1. Request激昂的跳糖/patcqdls/p2.attachedtogprsnetwork
ATkldjz/p AT清爽舞蹈/p 3. PPP process after *99***1#
ourmodulecontrolisverysimple 3360 at commands.thefollowingcommandsflowareapplicabletothemc 55，MC56 and SIMCOM's SIM300。
Some recorded AT commands flows are .
from China mobile ' ssim card (inh 50m c 55 )？ )生成at-log in Shanghai，captured on
satmorningxndbdat 19 jun 2010:
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at : [开始- upconfirmationthatmodulewillresponseatcommand ]
ATE0V1 : [disable echo，detailed responses on]
atQ3 [ RTS/ctshardwarehandshakeon ]
at csq [Signal quality]
at creg？ [网络注册]
at cimi [ requestinternationalmobilesubscriberidentity (imsi ) ]
atgsn [ requestinternationalmobileequipmentidentity (imei ) ]
ATC GATT=1[ attachtheterminaltogprsservice ]
at cgatt？ [ returnthecurrentgprsservicestate ]
at cgdcont=1，' IP '，' cmnet' [Define PDP Context]
at csq [Signal quality]
ATD * 99 * * *1# [ requestgprsservice ]
请参见----------------------------------------- -
如何在不打开minicom的情况下获取AT命令的结果
$ cat /dev/ttyUSB2 result.log
$ echo 'ATI' /dev/ttyUSB2