Hi all,
I wish to know whether it is possible to sent data across PSTN network. While the call is in progress. I want to sent some data through the telephone line (As DTMF tones can be sent). The data that I want to sent is digital which is encrypted and modulated on an analog carrier (So that it can be send over an analog wire). I have also seen my broadband working in parallel when the call is going on.
I would guess PSTN work the same way throughout the world.
Thanks ! NS