Siemens M65 AT COMMAND LIST

HELLO GUYS...

i AMD LOOKING FOR at COAMMANDD SRT fOR sIEMENS M65.

i CAN CONNECTG MY PHONE USING usb PORT AND fROM hHYPER TRMINAL
I CAN DIAL BY at+ATD.....;
BUT I FAILED TO SEND SMS USING AT+CMGS= pH NUMBER
MESSGAE;

iT SHOWS ME ERRRO PLEASE HELP ME