Running Doom on a 20-Year-Old Snom 360 Office Phone

This post is dedicated to my ADD and getting sidetracked at every possible step. A while back, I was given several VoIP phones that were phased out at my old job, among which were two Snom 360 Business phones from 2005. My original plan was to set up an Asterisk PBX with the phones I&rsquo;d collected. But then, while upgrading the firmware on one of the Snom 360s, I had a better idea. Since this…