Use Arduino/esp as (sms) modem

Projects Networking, Protocols, and Devices
1

Hope this is the right subforum...

I have a PC program wich can send out alarms as sms over an dial up modem. Since this is not installed anymore in modern pc`s my tought was to use an arduino or esp to recieve the alarm over internet.

If only i can get the message in the arduino i will plan further on how to do that (convert the pdu and send to domoticz maybe)

This is the settings page of the pc program:

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I think i need to get the right AT commands to get the message via serial in arduino. I tried with an lcd to visualize the incomming message with the following test program, but get no result. Any help is very apprieciated

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x3F, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);  // Set the LCD I2C address
const int wacht = 20;
char incom = 0;

void setup()
{
  lcd.begin(20, 4);        // initialize the lcd for 20 chars 4 lines and turn on backlight
  Serial.begin (9600);
  //lcd BL aanzetten
  lcd.backlight();
}

void loop()
{

  // when characters arrive over the serial port...
  if (Serial.available()) {
    // wait a bit for the entire message to arrive
    incom = Serial.read();

    // display each character to the LCD
    lcd.print(incom);
  }
}

// lcd.setCursor(0, 4);
// lcd.print("%");

}