The annual Asterisk user's conference is over.  I had my brain filled with exciting things like SS7 and ISDN protocol signalling, the nuances of the PRI protocol stack in Asterisk, and the new T.38 features in Asterisk 1.6.  The T.38 capabilities will allow us to do fax over the internet (FoIP or Fax over VoIP).  This means that we can provide fax numbers anywhere in the US and Canada.  I'll be setting up a test server for this soon.