Pulse dialing is similar to turning a light switch off and on. The pulses are generated through the making and breaking of the telephone connection. The audible clicks are a side effect of this.
Pulse dialing or loop disconnect dialing, also called Rotary or Decadic dialing in the United Kingdom (because up to 10 pulses are sent), is pulsing in which a direct-current pulse train is produced by interrupting a steady signal ( Tone) according to a fixed or formatted code for each digit and at a standard pulse repetition rate.
Try this with a friend sometime,
It is possible to trick a phone system into thinking that a rotary dial is being used. To do this, one finds the little button, switch, or hook that is pushed down when you hang up the phone. To "dial" the digit 1, tap it once. For the digit 2, tap it twice QUICKLY (ten taps per second for UK phones and in North America). For the digit 3, use three taps, etc. The digit 0 is ten taps. (But see above if you are in Sweden, New Zealand or Oslo.) Be sure to give a quick pause between each number.
Most fixed-line phones now use dual tone multi frequency (DTMF, also called touch tone or tone dialing) rather than pulse dialing, but most telephone equipment retains support for pulse dialing for backward compatibility. ISDN and GSM mobile phones perform call setup using digital signaling systems.
So unless u want to try your skill at Morse Analog pulse dialing, as oppose to digital Tone Dialing, Set that button or switch on your phone to TONE.
HOPE U ALL LEARNED SOMETHING TODAY : )