Page 51 - eBOOK FUNDAMENTAL OF TELECOMMUNICATION NETWORK
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U N S H I E L D E D
T W I S T E D P A I R ( U T P )
Unshielded twisted pair (UTP)
It is simply a transmission line (cable pair), consisting
of two insulated conductor twisted together.
The two wires in the local loop are twisted to
eliminate the crosstalks.
Analog to digital conversion (PCM) was completed at
the local exchange (central office; exchange to which
the user was connected)
Then, the digital signals are transferred via the PSTN
to end receiver for decoding (e.g in local exchange on
the other side which performs digital to analog
conversion) at 64kbit/s bit rate.
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