Upgrading a mixed-use tower: vendor advice for access control?
Considering access control system company PSM (https://psm-uae.com/services/access-control/) for a 30-floor mixed-use tower in Dubai. We need mobile credentials, visitor QR passes, anti-passback in car parks, and fire panel fail-open compliance. Has anyone done phased migration from legacy panels without nightly shutdowns? Would love notes on SLAs, 24/7 support responsiveness, and how clean their audit logs/export look for compliance reviews.