Every conversation about PSAP backup power tends to start in the same place: the radio tower. It is the visible piece of infrastructure, with its own generator pad, its own tower crew, and its own line item in the capital budget. At APCO’s 2026 conference in San Antonio, Evoltix fielded a different kind of question from dispatch and IT staff, and it had nothing to do with the tower. They wanted to know what protects the server room.
That server room is where a Public Safety Answering Point, or PSAP, actually processes a 911 call. The Computer-Aided Dispatch (CAD) system that routes the call to police or fire, the servers that host it, and the network switches connecting dispatch consoles to the radio network all live there, usually behind a UPS sized for a data closet rather than a mission-critical facility. The ZPM is not just a UPS replacement. It is what a communications center installs when a UPS is no longer enough.
This is not a hypothetical. Communications center managers have described UPS systems approaching end of life behind their CAD and call-handling equipment, a conversation that has nothing to do with the tower a mile away.
Where PSAP Backup Power Planning Usually Stops
Public safety backup power planning is built around the tower, the generator, and the P25 network, for good reason. But the CAD system, the call-handling servers, and the network gear tying dispatch consoles to the radio network sit in the same building, on the same grid, exposed to the same outage. If the tower stays powered and the server room does not, the call never gets dispatched in the first place.
Next Generation 911 (NG911) architecture depends on CAD and call-handling systems staying online continuously, including during the disasters that most often knock out utility power. Industry transition guidance from the National Emergency Number Association (NENA) treats backup power as one of several redundancy requirements a PSAP has to plan for, alongside network and data backups, not an afterthought handled by whatever UPS shipped with the server rack.
Source: National Emergency Number Association (NENA), NG9-1-1 transition and redundancy guidance
Why a Standard Rack UPS Falls Short in This Room
A standard double conversion UPS is built to bridge a data center rack through a brief utility blip, in a facility with reliable grid power and an on-call IT team down the hall. A PSAP equipment room during a hurricane or wildfire is not that environment. It is closer to the tower a mile away than to a corporate server closet: the grid can be down for hours, not minutes, and the staff who would normally check on a warning light are running the incident, not the equipment room.
A UPS sized for a data closet and a UPS sized for the room that keeps 911 calls flowing during a disaster are not the same purchase, even when they sit in racks that look identical.
What Dispatch Center Managers Are Actually Asking
The interest is specific: dispatch center managers want to know whether the battery-first platform already protecting the radio network can also cover central-site equipment, CAD servers, NG911 gateways, and the network racks that support them. It’s a fair question. Most of this equipment runs on whatever UPS was specified when the room was built, with no connection to the monitoring already watching the tower a mile away.
What a Battery-First Power Intelligence System Changes for the Equipment Room
The ZPM is a power intelligence system, and the features that make it the right replacement for an aging UPS at a tower site apply just as directly to the equipment room behind dispatch. Battery-first architecture means the battery carries the load through most grid events, with the generator as a fallback rather than the first response. Lithium batteries are rated for up to 15 years and require no ventilation for off-gassing, unlike the lead-acid batteries in most legacy UPS systems, which fail silently as they age. Up to 26 mappable dry contacts allow the same alarms and alerts already configured for tower sites to extend to the equipment room, so a network team sees a battery or grid event the moment it starts rather than when a server stops responding.
IntelliCore gives that team a single view of battery state of charge and grid status across every ZPM-equipped site, tower or central office, rather than a separate monitoring gap for each type of load.
If your dispatch center’s CAD and server room equipment is still riding on a standard rack UPS, talk to an Evoltix application specialist about what a battery-first platform looks like for that room, or model your own numbers first in a live Total Cost of Ownership (TCO) Studio session.
Contact an Evoltix application specialist: evoltixenergy.com/contact/
Call: +1 (855) 964-9274
Related Reading
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What Does a Backup Power Failure Cost a Public Safety Network?