Discussion in "8051 Discussion Forum" started by    har    Oct 22, 2007.
Mon Oct 22 2007, 10:59 AM
#1
please does anyone have the circuit of auto answering circuit
Mon Oct 22 2007, 11:44 AM
#2
i have replied you in the other topic.. and i don't think we really need 8051 for just switching on the answering machine

if you really want then.. its simple.. like one wire connected to 8051 via optocoupler can detect if ring is there.. and after say 3 rings.. you need to unhook the phone and activate the answering machine that can be done with the help of a relay circuit which is controlled by 8051.. hope i am not wrong.. i just gave u a rough idea.. so it will give u a head start

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