Chapter 10 Principle of Operation
10.2 Telephone Call Connection Mechanism
10-5
10.2 Telephone Call Connection Mechanism
10.2.1 Analog Telephone Network
To make a telephone call, the calling party and called party each must have a telephone set (telephone).
These telephones must be connected by a transmission route. The transmission route includes switches
located in central offices. The route itself comprises various components such as metallic cable and optical
cable. The entire transmission path between the two telephones is called an analog telephone network.
An analog telephone network comprises the following four parts:
KjA10003XA
Analog Telephone Network Configuration
Telephone set
Telephone set
Switch
Switch
Subscriber line
Transmission route
Subscriber line
KjA10004XA
Switching Equipment Network
Telephone set
Telephone set
Telephone set
Telephone set
Local switch
Local switch
Local switch
Local switch
Tandem switch
Tandem switch
Tandem switch
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