Things I missed in the video:
- The CallAlert signalling on the MaxTrac isn't a built-in feature. You need an optional DTMF decoder board which I was recently gifted by one of my friends. It's a relatively rare part, and I should have emphasized that more.
- Even though the simplex repeat feature is turned off on the ADS-SR1, it does still retain all of its other features like voicemail and stored voice beacons. This is actually a remarkably featureful repeater now, considering it's built around a RICK.