Hey Guys, bkruse here.

I know there has not been a ton of activity on the public svn repository
for the asterisk GUI. This is because we have been hard at work fixing
internal bugs, and new features for the Asterisk Appliance release.
I have currently just added a cool feature, that was exclusive to the Appliance
to our AsteriskNOW had that open source Branch:
Multiple Service Providers.
Now, since revision 1462,
(Click To View)
You can seamlessly integrate with some of VOIPs biggest names.
Including: Bandwidth.com, VoilaIP, SimpleSignal, Voicepulse and NGT.