#include <SoftwareSerial.h>

SoftwareSerial mySerial(2, 3);

void setup()
{
Serial.begin(9600);
mySerial.begin(9600);
Serial.println("Ready");
}

void loop()
{
if (mySerial.available())
Serial.write(mySerial.read());
if (Serial.available())
mySerial.write(Serial.read());
}