GET Data from website by sim900

I try using Sim900 to communicate to my own website ( abcd.somee.com)
These is my at commands :
type AT+CSTT="m3-world","mms","mms"
reply ok
type AT+CIICR
reply ok
type at+CIFSR
reply 10.204.2.78
type at+cipstart="tcp","www.abcd.somee.com","80"
reply ok
CONNECT OK
type at+cipsend
reply a symbol ">"
I typed GET http://www.abcd.somee.com/default.asp?Data=120,76000,3235.12,3254.231
double press Enter
and press ctrl+z
it reply send ok
nothing happen
However, I used a TCP Client Software, Hercules, connect to 198.37.116.30( ip of abcd.somee.com, ping abcd.somee.com, i got it) and port 80, connect ok
i typed in send boxof Herculess:
GET http://www.abcd.somee.com/default.asp?Data=120,76000,3235.12,3254.231 ( it is similar to these i typed in at command sim900)
it return all HTML code of my website
So, What happen to tcp send data of sim900, why it don't return like Hercules client ?