There's a huge difference between what they say they do in their ads and what really happens (for one thing). I figure Bass wrote most of their copy (or at least threw together a "help page" for Joel Matlin.
The problem with most two way voice systems is that if the burglar does answer they can usually keep the operator from even calling the police.
I disagree. An "Alarmfarce" system is completely unsupervised. The three I've removed weren't even wired to the phone correctly (no line seizure).