Yeah, you won’t get far without a FXO port, but in regards to the different version of the software, we’ve seen that. We have a few boxes here, but they all have the old one (which actually, I prefer). However, the thing is, it’s just the UI that’s different, both boxes are running Asterisk 1.4.0 I believe. Anyhow, I’ll have to track down how to update ours so that I can write another version of the guide (doing the “firmware update” from Atcom’s site isn’t enough, it doesn’t actually change the UI)
However, based on customer experience, I can offer this one tip: When setting up the dial pattern, the new UI will automatically add the “_” in front. So instead of “_NXXNXXXXXX”, which would be a valid pattern in the old box, you would just put “NXXNXXXXXX”.