Anyways, please see this post too:
http://groups.google.com/group/chan_dongle/browse_thread/thread/1f0b00f022076ef0#
Thanks!
It would also be great to actually be able to feed in the raw SMS bits and asterisk only to send them to the dongle. This way, every feature will be provided by some outside application that can be actually a simple PHP script. :) Depends on what you actually need.