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Title: Modems

Essay Details:

Subject: Technology
Author: Lauren H
Date: July 6, 2011
Level: University
Grade: A
Length: 13 / 3654

Essay text:

An Ethernet crossover cable has it's send and receive wires crossed. When using a hub or switch, this is automatically done for you. 4) Telephone Circuit Bandwitdth A POTS (Plain Old Telephone Service) line (in the US and Europe) has a bandwidth of 3kHz. A normal POTS line can transfer the frequencies between 400 Hz and 3.4 Khz. The frequency response is limited by the telephone transmission system (the actual wire from central office to your wall can usually do much more). Nowadays POTS is sharply bandlimited due to the fact that the line almost always is digitally sampled at 8kHz at some point in the circuit...

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