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Internet access over telephone lines has been driver by your desire for higher speed. Voice bandwidth: 3000 Hz signal to noise ratio between two phone

Internet access over telephone lines has been driver by your desire for higher speed.

Voice bandwidth: 3000 Hz

signal to noise ratio between two phone sets: 30 dB

modeling sample rate: 2400 baud

How can 56 Kbps be achieved and how can DSL modem achieve an even higher speed?

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