GPRS拨号连接OK，可是仍不能上网，可能是什么原因呢

如题。
监控串口数据
~!E@~!E@~!E@~!E@RD=msft&AR=copyright HTTP/1.1
Accept: */*
UA-color: color16
UA-pixels: 480x234
Accept-Encoding: gzip,deflate
Referer: file://\windows\default.htm
UA-CPU: x86
User-Agent: Mozilla/4.0 (compatible; MSIE 4.01; Windows CE; PPC; 240x320)
Host: www.microsoft.com
Connection: Keep-Alive

捌~~!E@sapi/redir.dll?PRD=msft&AR=copyright HTTP/1.1
Accept: */*
UA-color: color16
UA-pixels: 480x234
Accept-Encoding: gzip,deflate
Referer: file://\windows\default.htm
UA-CPU: x86
User-Agent: Mozilla/4.0 (compatible; MSIE 4.01; Windows CE; PPC; 240x320)
Host: www.microsoft.com
Connection: Keep-Alive

0#~
这里就不动了