differencies between EuroISDN and USA ISDN

> Who knows the technical protocol differencies between the EuroISDN standard
> used in Europa and ISDN used in USA.
> I make software solid state recorder equiped with an ISDN facility (TA)
>
>                                   Thank for your help 
>
>                                   J.-C. Schlup
>                                   Tel +4121 732 0 251
>                                   Fax +4121 732 0 100
____________________________________________________________________________
_________
Internet Provider: Groupe VTX