/*Error Message*/
#define MODEM_FAILURE -100
#define DIAL_FAILURE -101
#define DISCONNECT -102
#define SMS_TOO_LONG -103
#define SMS_FAILURE -104

#define SUCCESS 0
#define FAILURE -1


int Check_MODEM(int COMPort);

int Dial(int COMPort, char *DialNO);

int DataLink(int COMPort, char *TELNO, char *SendData, char *ReceiveData);

int SMS(int COMPort, char *TELNO, char *SMStxt);

void Hang_UP(int COMPort);

void EnableLEDmsg(void);

void DisableLEDmsg(void);