How to send sms using gsm with matlab

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MatLab

GSM

i want to send sms usig gsm with matlab
i have written following code but not getting any result except shown below

What I have tried:

 ss=serial('COM4');
ss.baudrate=9600;
fopen(ss);
ss.Terminator = 'CR'
%char(34 ") 13 enter. 26 for ctrl z
tx ='AT';
tx1=char(13);
tx2 ='AT+CMGF=1';
tx3 ='AT+CSCS="GSM"';
tx4 ='AT+CMGS="=+9197244*****"';
tx5 ='HELLO THI IS';
tx6=char(26);

fprintf(ss,'%s',tx);
fprintf(ss,'%s',tx1);
pause(1);
fprintf(ss,'%s',tx2);
fprintf(ss,'%s',tx1);
pause(1);
fprintf(ss,'%s',tx3);
fprintf(ss,'%s',tx1);
pause(1);
fprintf(ss,'%s',tx4);
fprintf(ss,'%s',tx1);
pause(1);
fprintf(ss,'%s',tx5);
pause(1);
fprintf(ss,'%s',tx6);

getting following output

   Serial Port Object : Serial-COM4

   Communication Settings 
      Port:               COM4
      BaudRate:           9600
      Terminator:         'CR'

   Communication State 
      Status:             open
      RecordStatus:       off

   Read/Write State  
      TransferStatus:     idle
      BytesAvailable:     0
      ValuesReceived:     0
      ValuesSent:         0