Cox Phone Upgrade Incompatible with Home Security System - Still

Why should the customer pay to get their security system to work due to Cox's decision to change stuff?  Why does it have to be a "security person" to fix it?  I was never a security person.  It was always a telephone person who fed dial tone to the RJ-31.

POTS or packet switch doesn't make a bit of difference, the line is analog and has the same characteristics.