Maybe rather than using a modem it's time to rethink what's actually happening on this communication interface and see if you can use the Internet or a network connection instead. It'll be a lot easier that way. Of course that may not be possible but if you control both ends then that may make sense.
+++ Rick ---
>Hi Gang.
>
>We need to find a replacement for SilverWare, to go from 16 bit to 32 bit, to handle Modems.
>
>Anyone got any suggestions.