Working extensions.conf

Does anyone have a working extensions.conf file they can post that has zero pri requirements?
The example from the "from scratch" guide is a nightmare "to say the least".
I have downloaded and reinstalled to the point that vicidial and astgui is becoming a true nemissis whaen all I need is a functioning extensions.conf to finally see if this program actually works and tinker with it for proof of concept.
I have zero pri, everything is SIP only and hoping to delete my entire extensions.conf and open a new extensions.conf and paste a working config then reload asterisk without error.
Is this possible or a fantasy?
I have no problem renaming my test sip clients to the extension numbers of the sample!
The example from the "from scratch" guide is a nightmare "to say the least".
I have downloaded and reinstalled to the point that vicidial and astgui is becoming a true nemissis whaen all I need is a functioning extensions.conf to finally see if this program actually works and tinker with it for proof of concept.
I have zero pri, everything is SIP only and hoping to delete my entire extensions.conf and open a new extensions.conf and paste a working config then reload asterisk without error.
Is this possible or a fantasy?
I have no problem renaming my test sip clients to the extension numbers of the sample!