Need Help in SIM300 Program

Using Arduino Programming Questions
1

I have the SIM300 Module . and i want to connect it with arduino Mega 1280.
The SIM300 has the serial Port.
As i have connect it with my PC and Sent AT command from the Hyper-terminal . It working 100%.
But i have no idea why it not working with Arduino.
I have connect the RX port of the SIM300 with the TX (port 1) of the Arduino Mega 1280.
And connect the TX port the SIM300 with the RX (port 0) of the Arduino Mega 1280.
And the ground should be the be ground of Arduino,

#include <SoftwareSerial.h>

SoftwareSerial cell(0,1);
void setup()
{
cell.begin(9600);
delay(5000);
}
void loop()
{
cell.println("ATD03459141254;");
Serial.write(byte(13));
delay(20000);
cell.println("ATH");
do
{ delay(1); }
while (1>0);
}

2 
#include <SoftwareSerial.h>

SoftwareSerial cell(0,1);

Fail. Completely.

You have 4 hardware serial ports, You don't need software serial ports.

Even if, for some reason, you CAN NOT do software serial on the hardware serial port's pins.

3

So how can i write to start communication with arduino ( 0 and 1 ) port..

4

I will be so much thankful to you. If you write the whole program ..
And start communication with Port 0 and 1 or Arduino Mega

5

I need help ... Plz any body help me ...

6

I will be so much thankful to you. If you write the whole program ..

I'm sure you would be. The question is just how grateful. If you really wanted to be grateful, you'd be posting in the Gigs and Collaborations section, with an offer to pay.

And start communication with Port 0 and 1 or Arduino Mega

Serial does communication on pins 0 and 1. Serial1 does communication on pins 18 and 19 (TX1 and RX1).

You simply need to connect your modem to the correct pins and use the correct instance to talk to those pins.