wince em200,该如何解决

wince em200
没法通过at指令实现无线通信   不知道问题出在哪里   贴出指令测试数据    望指导
   波特率：115200
串口：COM3

发送                      返回
at                             OK
ate0                             OK
at+csq?                             +CSQ:31,99
                                      OK
at%accnt=card,card             +CSQ:31,99
                                     OK
at%pppopen             OK
                                     %CORG:#777,1
At%pppstatus             %PPPSTATUS:1
                                      OK
at%dtuip                             %CCNT:1
                                      %CEND:7,1,00:00:02
                                     %PPPOPEN:1
                                     %PPPSTATUS:1
                                      %DTUIP:0,0.0.0.0
                                      OK
At%tcpopen = 1,61.144.176.236.3000                  %TCPOPEN:1,1
                                                    %TCPSTATUS:1,1
                                                    0k