When the signal can't fail.
NTSI is a field-driven in-building wireless company specializing in emergency communications, cellular connectivity, and integrated building networks — from FDNY ARCS Pilot (Auxiliary Radio Communication System) to ERCES, Cellular DAS, and low voltage.
Four systems we own end to end.
Survey through certification, handled by the same team that signed off the design.
ARCS Pilot
FDNY's next-generation emergency communication platform for high-rise buildings. NTSI completed New York City's second ARCS Pilot installation at Willets Point.
ERCES
Antennas, BDAs, and backup power that keep firefighters and emergency responders in radio contact on every floor, stairwell, and basement.
Cellular DAS
Strong, even cellular signal in basements, parking garages, and steel-framed structures — no dead zones.
Low Voltage
Structured cabling, CCTV & access control, enterprise Wi-Fi, and AV — one connected building environment.
Every building fails differently.
Concrete, steel, Low-E glass, and below-grade levels each kill signal their own way. We design against the real building, not the floor plan.
Towers built from concrete, steel, and code requirements
High-rises over 75 feet in NYC require ARCS; nearly every jurisdiction requires ERCES coverage before occupancy. We carry buildings from grid test through AHJ or FDNY sign-off.
Hospitals can't drop a call
Multiple floors, heavy concrete, and below-grade parking make hospitals the hardest RF environments — while telemedicine and monitoring demand more bandwidth every year.
Campuses where safety is the requirement
From K-12 to universities: eliminating dead spots for first responders and keeping students, staff, and families connected across every building on campus.
A life-safety system is only as good as the day it's needed. Everything we install is measured, PIM-tested, and documented — so it works when the signal can't fail.
How a project runs.
Baseline RF grid testing to IFC 510 — measuring what the building actually does to signal before designing anything.
iBwave coverage modelling by our engineers, tuned by decades of field experience and PIM-minimizing installation technique.
Coax, antennas, and headend fitted around your construction schedule, each stage signed off before the next begins.
RF sweep and 100% PIM testing, documented for the AHJ or FDNY — acceptance without surprises.
Annual recertification, maintenance plans, and engineers who already know your building.
Proven on the buildings that matter.
A selection from 1.8M+ square feet of engineered coverage across New York, Washington DC, Maryland, Virginia, and Georgia.
Tell us what your building needs.
Send your plans or just an address. Our engineers respond with a scoped, no-obligation assessment.