   buffer[inputLength] = '\0';
 
   Sim900.println(buffer);
-  delay(100);
+
+  // Give some time for GSM shield to process command
+  delay(500);
+
+  // Listen for input from GSM shield.
+  while (Sim900.available())
+  {
+    Serial.write(Sim900.read());
+  }
 }
    AT command to use is "AT+IPR=4800"

  Created 14 6 2014
  Modified 14 6 2014
*/
#include <SoftwareSerial.h>


  Sketch can be used to configure Sim900 shield

  Notes:
  - Make sure shield is manually powered on (ie, red light is on)
  - Notice that the baud rate for the shield connection is 4800. This
    is a workaround for SMS messages greater than 64 characters. Another
    option is to increase the buffer size defined in the Software Serial
