How Does a Telephone Work?

Shockwave

Switchhook

Tells the exchange that you are going to make a telephone call or that a call has just been ended.

Dial

Sends the telephone number of the phone you want to call.

Ringer

Warns of an incoming call.

Transmitter

Converts audio signals to electrical signals.

Receiver

Converts electrical signals to audio signals.

Handset

The unit containing the transmitter and receiver is called a handset.

	Return to the Gakushukan Home Page
	Back	Forward