HELP: TEL0051 and DS18B20

#include <OneWire.h>
#include <DallasTemperature.h>
#define ONE_WIRE_BUS 22
 

OneWire oneWire(ONE_WIRE_BUS);
 

DallasTemperature sensors(&oneWire);
byte gsmDriverPin[3] = {
  3,4,5};
 
void setup(void)
{
 
  Serial.begin(9600);
  Serial.println("Dallas Temperature IC Control Library Demo");
  sensors.begin();
   for(int i = 0 ; i < 3; i++){
    pinMode(gsmDriverPin[i],OUTPUT);
  }
  digitalWrite(5,HIGH);
  delay(1500);
  digitalWrite(5,LOW);  
  digitalWrite(3,LOW);
  digitalWrite(4,HIGH);
  delay(2000);
  Serial.begin(9600); 
  delay(5000);
  delay(5000);
  delay(5000);
}

void smssend(void){
  
   Serial.println("AT"); 
  delay(2000);
  Serial.println("AT");   
  delay(2000);
  //Send message
  Serial.println("AT+CMGF=1");
  delay(1000);
  Serial.println("AT+CMGS=\"0637077108\"");
  delay(1000);
  Serial.print("Alerte T a dépasser les limites");
  delay(1000);
  Serial.write(26);
  while(1);
  
  }
 
 
void loop(void)
{

  Serial.print(" Requesting temperatures...");
  sensors.requestTemperatures(); 
  Serial.println("DONE");

  Serial.print("Temperature for Device 1 is: ");
  Serial.print(sensors.getTempCByIndex(0)); 

  if ( sensors.getTempCByIndex(0)>30){
    smssend();
    }
  
 
}