Interfacing GSM with LPC2148

[Twisted_transistor]

HI.. This is the code I've written to send an sms via the GSM modem interfaced with LPC2148.. But however the number to which the message has to be sent does not receive any message..
Can someone pls help me understand why this is happening?

This is the code:

#include "LPC214x.h"
void init(void);
extern unsigned char cmgf[]="AT+CMGF=1";	                        //Text format in GSM modem
extern unsigned char cmgs[]="AT+CMGS=\"##########\"";           	//Mobile number to which the msg is sent
extern unsigned char msg[]="Hello";						 		   //secret code


void senduart1(unsigned char a)					//sends a byte through U1
{
U1THR=a;
while(U1LSR!=0x60);
}

void sendstring(unsigned char *p)			 //Sends a string of data through UART1
{
while(1)
{
if(*p=='\0') break;
senduart1(*p++);
}
}

void delaygsm()							  //delay function
{
int i,j;
for(i=0;i<60000;i++)
for(j=0;j<51;j++);
}

int main()
{
PINSEL0=0x00050005;			//initialized U0 and U1 as UART and not GPIO
PINSEL1 = 0x00000000;
PINSEL2 = 0x00000000;
init();


sendstring(cmgf);
senduart1(0x0d);										// equivalent of 
senduart1(0x0a);										//	 enter key
delaygsm();
sendstring(cmgs);
senduart1(0x0d);
senduart1(0x0a);	 
delaygsm();
sendstring(msg);
senduart1(0x1a);

}


void init()
{
 
U1LCR=0x83; //8-N-1, enable divisors
U1DLL=0x62; //9600 baud (9615)
U1DLM=0x00;
U1LCR=0x03; //8-N-1, disable divisors
}

I'm using SIM300 by the way.
Thanks in advance