What are the three main features of the telephone system and

What are the three main features of the telephone system and what are they responsible for?

Solution

A telephone is a device which is used for making voice calls to others over a distance there are many features that are available for the telephone now a days some of them are

Auto Display:

If someone is expecting a call from you, but is tied up on their first line, they can see that you have called because your Name Display shows up for a few seconds while their second line flashes. Up to 24 characters can usually be displayed on the set.

Name Display

This feature displays your name and phone number when you make calls to campus lines that also have telephone display sets.

Speed Calling

With Speed Call, one key on a multi-line set accepts codes entered by the user. Each of these codes is associated with a given phone number on the user\'s Speed Call list. You can program a list of 10, 30, or 50 frequently called numbers. An access code or key can be used to automatically dial the numbers.