Canon fax basic 2000 サービスマニュアル

1–15

1

2

3

4

5

6

ït

çi

BASIC OF TELEPHONE

5. INTRODUCTION TO THE TELEPHONE 

NETWORK

We can talk to people over a long distance because we have an interlinked

telephone network which contains many telephone centers.

In this section, let’s learn about the mechanism of a telephone network.

5.1

Parts of a Telephone Network

To communicate over a telephone line, you need two telephones, a tele-

phone line, and an exchange system. The telephone is sometimes called a

terminal, because it is at each end of the telephone line.

Fig. 1-16   Parts of a Telephone Network

Telephone line

Exchange system

Telephone (Terminal)

Telephone (Terminal)