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Modem Line Protection

Based on a Labs project | October 2011 | Find it here
We haven’t yet experienced this first-hand, but it seems to occur more often that when some websites are visited they switch the Internet connection over to a premium rate dial-up number. This is of course very irritating, because it is hardly noticeable and it certainly costs a lot more.This circuit is simplicity itself, but still offers effective protection against these practises.
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