Arduino Pulse Dialer

// *Arduino Phone Dialer*
// Uses the pulse dialing method to dial a phone number.

int offtimer = 60;           // The higher the number, the slower the timing.
int ontimer = 30;
int phone_number[] = {
  0,1,7,6,9,0,8,3,0,0};       // the phone number to dial
int number_length = 9;           // the number of digits in the phone number (i.e. the length of the array)
int out=12;    // the output pin to the pulsing relay
int didthis=0;

void setup() {
  pinMode(out, OUTPUT);  // define pin as output.
}

void loop() {
  // do this once
  if (didthis == 0) {
    digitalWrite(out, HIGH);   // turn on the relay to establish a connection to the phone (i.e. plugging in the phone)
    delay (1000);

    // loop through the phone numbers
    for (int count = 0; count <= number_length; count++) {
      delay (1000); // delay after every number dialed
      switch (phone_number[count]) {
      case 1:
        // If the number to be dialed is 1, pulse once.
        digitalWrite(out, LOW);   // turn the relay OFF
        delay(offtimer);               // wait for a while
        digitalWrite(out, HIGH);    // turn the relay ON
        delay(ontimer);               // wait for a while
        break;

      case 2:
        // If the number to be dialed is 2, pulse twice.
        for (int repeat = 0; repeat < 2; repeat++) {
          digitalWrite(out, LOW);   // turn the relay OFF
          delay(offtimer);               // wait for a while
          digitalWrite(out, HIGH);    // turn the relay ON
          delay(ontimer);               // wait for a while
        }
        break;
      case 3:
        // If the number to be dialed is 3, pulse thrice.
        for (int repeat = 0; repeat < 3; repeat++) {
          digitalWrite(out, LOW);   // turn the relay OFF
          delay(offtimer);               // wait for a while
          digitalWrite(out, HIGH);    // turn the relay ON
          delay(ontimer);               // wait for a while
        }
        break;
      case 4:
        // If the number to be dialed is 4, pulse 4 times.
        for (int repeat = 0; repeat < 4; repeat++) {
          digitalWrite(out, LOW);   // turn the relay OFF
          delay(offtimer);               // wait for a while
          digitalWrite(out, HIGH);    // turn the relay ON
          delay(ontimer);               // wait for a while
        }
        break;
      case 5:
        // If the number to be dialed is 5, pulse 5 times.
        for (int repeat = 0; repeat < 5; repeat++) {
          digitalWrite(out, LOW);   // turn the relay OFF
          delay(offtimer);               // wait for a while
          digitalWrite(out, HIGH);    // turn the relay ON
          delay(ontimer);               // wait for a while
        }
        break;
      case 6:
        // If the number to be dialed is 6, pulse 6 times.
        for (int repeat = 0; repeat < 6; repeat++) {
          digitalWrite(out, LOW);   // turn the relay OFF
          delay(offtimer);               // wait for a while
          digitalWrite(out, HIGH);    // turn the relay ON
          delay(ontimer);               // wait for a while
        }
        break;
      case 7:
        // If the number to be dialed is 7, pulse 7 times.
        for (int repeat = 0; repeat < 7; repeat++) {
          digitalWrite(out, LOW);   // turn the relay OFF
          delay(offtimer);               // wait for a while
          digitalWrite(out, HIGH);    // turn the relay ON
          delay(ontimer);               // wait for a while
        }
        break;
      case 8:
        // If the number to be dialed is 8, pulse 8 times.
        for (int repeat = 0; repeat < 8; repeat++) {
          digitalWrite(out, LOW);   // turn the relay OFF
          delay(offtimer);               // wait for a while
          digitalWrite(out, HIGH);    // turn the relay ON
          delay(ontimer);               // wait for a while
        }
        break;
      case 9:
        // If the number to be dialed is 9, pulse 9 times.
        for (int repeat = 0; repeat < 9; repeat++) {
          digitalWrite(out, LOW);   // turn the relay OFF
          delay(offtimer);               // wait for a while
          digitalWrite(out, HIGH);    // turn the relay ON
          delay(ontimer);               // wait for a while
        }
        break;
      case 0:
        // If the number to be dialed is 0, pulse 10 times.
        for (int repeat = 0; repeat < 10; repeat++) {
          digitalWrite(out, LOW);   // turn the relay OFF
          delay(offtimer);               // wait for a while
          digitalWrite(out, HIGH);    // turn the relay ON
          delay(ontimer);               // wait for a while
        }
        break;
      }
    }
  }
  didthis=1;
  digitalWrite(out, HIGH);   // turn the relay ON to keep the phone on the line and wait for the other end to ring.
}