Phil: earlier in this discussion ( February 18, 2003 15:23 ), you posted a note about
"The second tools is a specification for the TTY interface which enables developers to directly access the GSM/GPRS Expansion Pack from their applications".
The link posted doesn't point to the tools, and despite lots of searching I've only been able to get hold of the tty.exe app, but no "specification" SDK or API. I want to send/receive SMS messages from/into my own app so I'm hoping that (when I find it) the "specification" will help.
Do you have another link ?