Authorized installer
We deploy industry-leading P25 / public-safety radio systems
Tap a manufacturer below to see what we deploy and how we engage on each platform.
AHJ-coordinated ERCES + BDA design, install, and grid testing for every state P25 system we work in — SLERS-2 in Florida, VIPER in North Carolina, Palmetto 800 in South Carolina, TACN in Tennessee, and Atlanta-area Georgia AHJs. We pass the test or we come back and fix it.
P25 Phase II is the digital TDMA upgrade most state public-safety radio networks are now running on, and most commercial buildings in those states are required to amplify it indoors under IFC 510 / NFPA 1225. The catch: every state's P25 system uses different frequencies, talkgroups, and AHJ acceptance grids — a building that passes in Atlanta does not automatically pass in Tampa or Charlotte. JB Technologies designs and installs ERCES systems tuned to the actual P25 Phase II infrastructure your AHJ runs. We coordinate the grid test with the fire marshal, document the dB thresholds, and own the sign-off path so your CO is not held up by a failed radio coverage test. Note for procurement and code documents: ERCES and ERRCS (Emergency Responder Radio Communication System) refer to the same in-building public-safety radio enhancement system. ERCES is the term used by the 2025 NFPA 1225 standard and most current model-code references; ERRCS is the legacy term still used in many AHJ contractor packets, procurement specs, and existing-building documentation. JBT works to whichever term your AHJ uses.
Click any state for the full ERCES + P25 deep-dive on that state's location page.
Florida is mid-cutover from EDACS to SLERS-2 right now — the panhandle phase finished in April 2026, and the rest of the state cuts over by July 1, 2026. Every commercial building with an existing ERCES will need to be re-tuned, re-tested, and re-signed-off against the new P25 Phase II frequencies as each phase lands. We design dual-band BDAs where the cutover schedule demands it and coordinate the AHJ-witnessed retest.
North Carolina has the hardest current deadline of any state we serve — VIPER is in P25 Phase II TDMA, and legacy radios were sunset on December 15, 2025. Every building permit issued in NC now requires the ERCES to be designed and tested against the live P25 Phase II talkgroup list. We work the BDA design from the AHJ's talkgroup pull-list, not generic Phase I assumptions.
Georgia has no single statewide P25 system — enforcement lives at the AHJ. The 2018 IFC went into effect statewide on January 1, 2025, and Atlanta Fire Rescue and the metro fire marshals enforce ERCES at certificate of occupancy. JB Technologies is HQ'd in Dallas, GA — we hold every license, pull permits in our name, and have working relationships with every metro AHJ.
South Carolina's Palmetto 800 system is moving to TDMA-only on July 1, 2027. Owners with 18-24 month design cycles are researching now. We design the BDA against the Palmetto 800 TDMA talkgroup list, document the channel plan for the AHJ, and time the install to the building's CO target.
TACN is live and onboarding new Tennessee counties on a rolling basis. Each onboarding county triggers an ERCES re-tune in commercial buildings to match the new TACN frequencies. We track the rolling schedule and coordinate the retest with the county fire marshal.
ERCES (Emergency Responder Communication Enhancement System) — also written as ERRCS in older AHJ packets and procurement documents — is governed by a stack of overlapping federal, model-code, listing, and licensing standards. Every JBT design references the specific edition each AHJ has adopted.
Standard for Emergency Services Communications — the 2025 consolidation of NFPA 1221, 1061, 1801, and 1802. Sets the in-building radio coverage requirements (DAQ 3.0, 95% / 90% grid pass, signal threshold) most U.S. AHJs now reference for ERCES acceptance testing.
Installation of Public Emergency Services Communications Systems — superseded by NFPA 1225 in 2025 but still cited verbatim in many AHJ ordinances and current contracts. JBT designs to whichever the AHJ has formally adopted.
National Fire Alarm and Signaling Code. Governs fire alarm panel integration with the ERCES (annunciation, supervisory signal, antenna failure trouble) and the inspection / test cadence shared with the fire alarm system.
Fire Code adopted in many states (notably Florida) as the umbrella that pulls IFC 510 and NFPA 1225 / 1221 into the local enforcement regime.
International Fire Code Section 510 — Emergency Responder Radio Coverage. The most commonly cited code clause for new construction in 2018, 2021, and 2024 IFC editions across the Southeast.
International Building Code — sets the construction occupancy classification that triggers ERCES under IFC 510 and the supporting structural / fire-rated pathways the BDA system requires.
Standard for In-Building 2-Way Emergency Radio Communication Enhancement Systems. Listed-equipment requirement for BDAs, signal source equipment, and battery backup. JBT installs only UL 2524-listed BDAs.
Land Mobile Radio Service licensing — governs the public-safety frequencies the BDA amplifies, donor-antenna isolation requirements, and the FCC-license-holder approval that must be on file before the BDA can transmit.
NICET's formal Emergency Responder Communication Enhancement System certification. Many AHJs now require a NICET-certified technician to sign the grid test report. JBT holds the certification.
Florida Building Code, NYC RCNY Ch. 35, Georgia State Minimum Fire Code, Atlanta Fire Rescue 510 Requirements, Hall County ERCES Contractor Packet, Hillsborough & Collier County ERCES guidelines — every AHJ publishes its own contractor packet that we work at design time.
Public-safety BDA / ERCES platforms — UL 2524-listed bi-directional amplifiers tuned to the AHJ's P25 talkgroup list:
Public-safety BDAs (ADXV-PS V2, SDR DAS Master/Remote, ADX-V Class B), donor antennas, and NMS monitoring. Strong fit for high-rise and campus ERCES on the SLERS-2, VIPER, Palmetto 800, and TACN networks.
Apex public-safety BDA, signal source equipment, and DAS infrastructure. Common on multi-floor commercial and healthcare buildings; we deploy where AHJ acceptance practices already accept the Westell platform.
Nextivity's public-safety Sentry line (separate from the CEL-FI commercial cellular series). Channelized BDA design that fits smaller commercial buildings and mid-rise multifamily without the conduit footprint of a full DAS.
Commercial cellular DAS platforms — deployed alongside ERCES on shared cabling where buildings also need carrier voice/data coverage:
Commercial cellular DAS — GO G41, QUATRA enterprise series, plus the QUATRA 6000 for large-building cellular coverage. Deployed alongside ERCES on shared cabling pathways where buildings need both public-safety and carrier coverage. JBT is an Authorized Nextivity Reseller.
Commercial cellular signal boosters — Pro 70 Plus, WilsonPro 1300 / 4300 / 4300R, IoT 5-Band. Carrier-agnostic (AT&T, Verizon, T-Mobile, US Cellular) for buildings where carrier coverage is the gap. Cellular only — not for public-safety / P25.
P25 Phase II is still the correct term in 2026. The buyer-side language has shifted toward "TDMA cutover" and "P25 ISSI" (Inter-RF Subsystem Interface), but Phase II is still how AHJs, state systems, and procurement documents describe it. We use "Phase II" plus the relevant state system name (SLERS-2, VIPER, Palmetto 800, TACN, MARCS-IP) on every submittal.
IFC 510 and NFPA 1225 require minimum signal strength on the AHJ's public-safety frequencies across a grid of test points inside the building. The AHJ specifies the grid spacing, the dB threshold (typically -95 dBm DAQ 3.0), and the percentage of points that must pass (typically 95% / 90%). We run the grid with a calibrated meter, the AHJ witnesses, and the as-built grid becomes part of the closeout package.
Phase II uses TDMA on the same frequencies but with different channel structure. A BDA tuned for Phase I voice traffic can lose 3-6 dB of effective coverage on Phase II talkgroups, pushing the building below the AHJ's pass threshold. The channel plan in the BDA filter has to be retuned, and in some cases the donor antenna has to move to maintain isolation.
Yes. P25 Phase II runs in dedicated public-safety bands (700 MHz / 800 MHz). Commercial cellular runs in carrier-licensed bands. You can deploy a hybrid donor antenna and shared cabling, but the BDA itself is dedicated to public safety. We also install separate commercial cellular DAS (Nextivity CEL-FI, WilsonPro) where carrier coverage is the problem.
A retrofit on an existing 100,000-sq-ft commercial building runs 4-8 weeks from contract to AHJ sign-off, assuming the donor antenna mount and conduit are already in place. New construction is paced by the GC schedule — we coordinate rough-in early so cable pathways and equipment-room space are reserved before drywall.
Florida SLERS / SLERS-2, North Carolina VIPER, South Carolina Palmetto 800, Tennessee TACN, Georgia regional P25 + SouthernLinc LTE backup. We have current ERCES installations across Florida, North Carolina, South Carolina, Tennessee, Alabama, and Georgia. For other states, we evaluate per project against licensing and AHJ access.
Yes — NICET added an ERCES standard in September 2024 and we hold the certification. Many AHJs now require a NICET ERCES-certified technician to sign the grid test report.
Tap a manufacturer below to see what we deploy and how we engage on each platform.
Tell us your state, your AHJ, and the building — we will assess whether your existing ERCES still passes the current P25 Phase II grid, and what an upgrade would look like.
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