sim900 gsm module and hyper terminal (first connection)

I bought sim900 gsm module from http://eshop.eca.ir/بردهای-کاربردی/1276-برد-کاربردی-صنعتیgsm-sim900-revb.html .
this module has 9600 baud rate, but i can not send AT commands with hyper terminal or arduino Uno. i want to use uart connection.