[image] Dial Up modem's days are long gone but Land line still exists either in the form of home pbx or PSTN, An Arduino based Dial Up modem shield can be used for a lot of fun projects. I'm no electronics expert but modem chips are already available with AT Command support http://www.conexant.c…

Arduino Dial Up Modem shield

Lakes July 14, 2013, 9:54am 4

Arduino Answering Machine/Caller ID - Cold caller blocker, take my money already.

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