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Using Telephone and Cable Networks
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Data Communications and Networking Solution Manual 2024 with complete solution
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Chapter 9Using Telephone
and Cable Networks
for Data Transmission
9.1
, 9-1 TELEPHONE NETWORK
Telephone networks use circuit switching. The
telephone network had its beginnings in the late
1800s. The entire network, which is referred to as the
plain old telephone system (POTS), was originally an
analog system using analog signals to transmit voice.
Topics discussed in this section:
Major Components
LATAs
Signaling
Services Provided by Telephone Networks
9.2
, Figure 9.1 A telephone system
Local loop
Trunk Trunk
•••
End Tandem
offices offices Regional offices
9.3
, Note
Intra-LATA services are provided by
local exchange carriers.
Since 1996, there are two
types of LECs: incumbent local
exchange carriers and competitive
local exchange carriers.
9.4
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