Feb 8, 2013 #1 A ARTINJ New member Feb 8, 2013 0 0 0 after dialing a DTMF number and connecting a call now how do the sounds get broad casted? guess it should be a direct transfer of same sound wave frequencies into voltage pulses?
after dialing a DTMF number and connecting a call now how do the sounds get broad casted? guess it should be a direct transfer of same sound wave frequencies into voltage pulses?