Ok now let me clearify in detail,
actually why I m supposed to use X.25 is that because the the card is going to be placed at the Telecom Switches which works on TDM technology, and X.25 too works on the same.
now I really wanna know that whether I should have to prepare all the layer from no.4 to no.7(i.e Transport,Session,Presentation and Application) as FTAM works at Appn layer n I ve support for first 3 layers (1-3).
there is ISO 8571 is the standard for FTAM implementation, but that is to be purchased so I right now wanna know in advance, prior to purchase to what actually I need to implement.
Thanks.