Advantech ADAM-5511 Manual page 288

Modem Dial Out
Direct modem to dial the specified telephone number
void modem_dial_90(int portno, char *telnumber)
portno
*telnumber
None
void main ()
{
port_install(1);
:
:
//initial modem for port1
modem_initial_90(1);
//set the dial out number as "1234-5678"
modem_dial_90(1, "12345678");
}
The specified port number
The telephone number you would like to dial out