Hello All,

Thanks for the suggestions and tips.

I am now convinced that it is NOT going to be easy to implement IAP over telephone - not that it is impossible - but the trouble is not worth the benefits. Maybe my product manual can brag about " Automatic Remote Updates "...

I originally thought that I will have a dedicated modem at the customer's end for this purpose. Mike's idea to use a dedicated chip for this was new to me. Good.

And as for IAP routines, I was planning to use the built in ones.

So, till I find the next customer who can fund this R&D, my current project is underway with the Comm Port + LapTop + FlashMagic combo.

Cheers

Raghu