I am new to freeswitch, and is just now reading the book freeswitch 1.2. Files like 1000.xml or vars.xml used to stay inside "conf" folder. However on git latest master branch, inside "conf", I see folders

curl

insideout

rayo

sbc

softphone

vanilla

within each folder, there are files 1000.xml or vars.xmlm like "vanilla" and "insideout". Can anyone explain the new data structure here. What is insideout, vanilla or sbc in master please. Thank you