Oh that's great many thanks for the list.
In fact the list just shows the difference I need.
To every one else on this forum, I agree that I can't spend weeks de-bugging and install.
PBXNSIP on a linux platform takes less then 2 hours including install of SUSE.
Then setup DNS and walk away in the knowlage that the thing stays up.
Every pbxnsip I have installed has been very stable, even in the old version 1.5 days!
thanks chaps