please answer this:

I have two PCs both have separate supplies. i made a null modem cable(dont know if it has optos inside the cable) but this easily transfers data between the two(even though flow control and error control not used). now if i replace the one PC with raghunathan's device, its a good DTE i assumed) how will cable come to know and in turn malfunction.



and if some flaw in it. please let me know where i'm wrong.

abhishek