If your building has an ERCES system installed before 2018, there's a real chance it won't pass your next annual inspection. Fire marshals across the country are enforcing P25 Phase II mandates — and systems that were code-compliant when installed are now failing re-inspection.
This isn't a future concern. Building owners in Atlanta, Houston, Chicago, Dallas, and dozens of other metros are already receiving notices. Here's what's changing, why it matters, and what your options are.
The Short Version of P25
Project 25 (P25) is a set of standards for digital public safety radio communication developed by the Association of Public-Safety Communications Officials (APCO). It replaced the analog systems most jurisdictions used through the 1990s and early 2000s.
P25 has two phases:
- Phase I (FDMA): The original digital standard. One voice channel per 12.5 kHz of spectrum. Most systems installed between 2005 and 2015 are Phase I.
- Phase II (TDMA): The updated standard. Two voice channels per 12.5 kHz of spectrum — doubling capacity on the same frequency. Most major metro public safety networks have migrated or are migrating to Phase II.
The problem: a Phase I BDA system cannot properly amplify a Phase II signal. The waveform is different. An older system may appear to pass basic signal strength tests while garbling Phase II voice traffic — exactly the scenario that gets firefighters killed when radios fail inside a structure.
The risk isn't theoretical. NFPA investigations into firefighter fatalities have repeatedly cited in-building radio failure as a contributing factor. P25 Phase II mandates exist because Phase I systems create a false sense of compliance — signal appears present, but voice quality degrades under Phase II modulation.
Why Fire Marshals Are Enforcing This Now
Most major metro public safety networks completed their P25 Phase II migrations between 2018 and 2023. Atlanta's system, for example, runs on a Phase II network. Once the network migrates, any in-building ERCES operating on Phase I BDA equipment becomes a liability.
Fire marshals are responding to this in two ways. Some jurisdictions have issued formal compliance deadlines — building owners have until a specific date to upgrade or face violations. Others are enforcing it through the annual inspection process: if your system fails a Phase II voice quality test, you get a deficiency notice and a deadline to remediate.
In either case, the outcome for non-compliant buildings is the same: a notice of violation, a remediation deadline, and potential occupancy implications if the deadline passes.
How to Tell If Your System Is Affected
Four questions to ask about your existing ERCES:
- When was it installed? Systems installed before 2018 are likely Phase I unless the specs say otherwise.
- What BDA equipment is in use? Pull the equipment records. The manufacturer and model will tell you whether it's Phase I or Phase II capable. Common Phase I-only units include older Comba, Westell, and JMA equipment.
- What is your local public safety network running? Contact your local public safety communications center or fire marshal's office. If they've migrated to Phase II, your Phase I system is non-compliant.
- Has your system been tested recently with a Phase II radio? Annual inspections that only check signal strength (dBm) will miss Phase II compatibility issues. A proper test requires a P25 Phase II portable radio and a bit error rate (BER) test.
Note: Some BDA manufacturers released firmware or hardware upgrades to bring Phase I units into Phase II compliance. Before assuming you need a full replacement, check whether your equipment has an upgrade path. In many cases, a hardware module swap is significantly cheaper than full system replacement.
What a P25 Phase II Upgrade Involves
The scope depends on your existing system:
| Scenario | Likely Scope | Relative Cost |
|---|---|---|
| Phase I BDA with Phase II upgrade path | Firmware/hardware module replacement | Low |
| Phase I BDA, no upgrade path | BDA replacement, reuse antenna infrastructure | Medium |
| Old passive system, undersized for Phase II | Full system redesign and replacement | High |
| No ERCES installed | New system design, permitting, and installation | Full project |
In most cases where the antenna infrastructure is intact and properly sized, replacing the BDA head-end equipment is the primary work. The antenna runs, cable pathways, and power infrastructure often stay. That keeps cost considerably lower than a full system replacement.
Any upgrade still requires AHJ re-inspection and sign-off. Budget for a re-test after the work is complete — the fire marshal needs to verify compliance before closing the deficiency.
Timelines and Deadlines
If your jurisdiction has issued a formal compliance deadline, treat it seriously. Extensions are not always granted, and the consequences of a missed deadline range from fines to occupancy restrictions. Some jurisdictions are issuing 90-day notices; others are giving 12 months from the date of inspection deficiency.
If you're not sure whether your jurisdiction has a deadline, call your local fire marshal's office directly. The answer takes five minutes and could save you from a surprise during your next annual inspection.
New Construction Considerations
If you're designing a new building, specify P25 Phase II-capable equipment from the start. The cost difference between Phase I and Phase II equipment at the design phase is small. Retrofitting later — after tenant buildout, after finished ceilings, after the fire marshal has flagged a deficiency — is expensive and disruptive.
Also specify equipment with future-upgrade paths. The public safety radio landscape will continue evolving. Equipment that supports software-defined radio (SDR) or modular hardware upgrades gives the building a longer useful life before the next technology transition forces another replacement cycle.
Bottom Line
If your building has a pre-2018 ERCES and your local public safety network has migrated to P25 Phase II, schedule an assessment now. Don't wait for the annual inspection to surface a deficiency — by then you're working against a deadline with limited time to procure equipment, pull permits, and schedule AHJ re-inspection.
The upgrade is often less disruptive than building owners expect. But it requires lead time, especially in markets where certified ERCES contractors are backlogged.
Get a P25 Compliance Assessment
We'll pull your existing system specs, test against your local public safety network's Phase II signal, and tell you exactly what's needed — before the fire marshal does.
Schedule an Assessment