C-Man said:@sweet_nth,
everything can be done using a microcontroller and a PWM output
See my post here for details:
h**p://
best regards
Jack// ani said:Just a curious question......Do dialup modems have DTMF recievers?? Is it possible to detect caller's phone number using this reciever? I want to know how these tones are send by the telco, do they send the callers phone no before the ring or after it???
shafee001 said:so there is a little long scielnce between 1st and 2nd rings
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