as subject, i'd like to transfering data files (text file) via modem on PSTN line. can't find spesific info for it in everywhere, can anyone guide me with info's.

the software using which we can send data through pstn is mada in java.
plz tell us when you have created that software ?
and can it poosible that we can send the image from that ?
if possible then what is the minimum and maximum size of image ?
what is the capacity of text file that we can send through this software ?
plz reply soon !!!!
thank you for providing us this facility !!!!