USB Modem voltage and dial tone detection (.net)

Avg Bid (USD)
Project Budget (USD)
$250 - $750

Project Description:
I need functions written in which will communicate with a USB modem over a con port to return the voltage on the phone line at any given time, and another function to return (true/false) if there is a dial tone on the line.

Skills required:
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$ 500
in 30 days
$ 350
in 10 days
$ 575
in 15 days
$ 750
in 19 days
$ 250
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