Page 45 - eBOOK FUNDAMENTAL OF TELECOMMUNICATION NETWORK

T E L E P H O N E

N E T W O R K

Telephone Network consist of end users who have

phone handsets (i.e telephones) connected via

twisted pairs (local loop) which connect the

telephone in the home (or office) to local exchange

(central office).

Local exchanges are interconnected with

transmission systems, following certain network

hierarchy (PDH/SDH etc).

When all switching and transmission is accomplished

by using digital signals then it is referred to as Digital

Network.

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