https://rdegges.com/2010/asterisk-expression-truthiness/
Randall Degges - Asterisk Expression Truthiness
A quick look at what Asterisk considers 'truth'. We'll look at source code and plenty of examples.
randallasteriskexpressiontruthiness
https://www.sightunseen.com/2021/07/new-design-hotels-summer-2021-masalina-white-water-ami-orso/deluxe-king-fireplace-shade-degges/
Deluxe King Fireplace - SHade Degges - Sight Unseen
deluxe kingfireplaceshadesightunseen
https://rdegges.com/2010/the-asterisk-spooling-daemon/
Randall Degges - The Asterisk Spooling Daemon
An informal code review and look at the Asterisk call file daemon (pbx_spool.so).
the asteriskrandallspoolingdaemon