Is there a current ISO?
Found the old repo (guessing it's old due to the date) @ http://repo.2600hz.com/ISOs/ and that hasn't been updated since 2015ish. (some newer 2017 items there)
I did find this https://github.com/2600hz/sysadmin/blob/master/doc/install/install_via_iso.md which has a 2016 date on it, but is pointing to the link above.
I did see the under development note in the .md.
esoare