I am wondering what others experiences are with UPS performance with Partner ACS, with the messaging module. I have never had any outages for my customers beyond a few minutes, and wondered what real life experiences are with UPS requirements to power a full cabinet ACS with the full blown messaging module? What do I need to recomend to give them 1 hr, 2 hr, 3 hr, 4 hr, 8 hr up time without local power?