Fix poor cell signal inside your building.
Energy-efficient glass, concrete and steel keep the weather out, and the cell signal too. An indoor cellular system brings the major carriers inside.
What it looks like day to day.
A typical scenario based on the environments we work in, not a specific customer.
- Calls drop when people walk in the door
- Signal is fine by the windows and gone in the core
- It depends on which carrier you have
- People step outside to take calls
Modern buildings block cell signal by design.
Low-e glass and dense construction are great for energy efficiency and bad for cell signal. Wi-Fi calling helps some phones, but not every device, carrier or situation. An indoor system brings the carriers' signal inside and spreads it where people are.
How we fix it.
Indoor cellular (often called DAS) brings AT&T, Verizon and T-Mobile signal inside your building and spreads it where people are, so calls, texts and data just work.
Measure what's there
Check each carrier's signal inside and out.
Design the system
Antenna placement from your floor plans, with an onsite survey when the building calls for it.
Coordinate with carriers
Approvals and signal source handled for each carrier.
Install and verify
Confirm coverage floor by floor when the project calls for it.
Designs start from your floor plans and each carrier's signal. We survey on site when the building calls for it.
What's different after.
Calls that stay connected
Across floors, cores and interior rooms.
All major carriers
Not just whichever one someone happens to have.
A better building
Tenants and staff stop complaining about signal.
Where this works, and where something else fits better.
We recommend what solves the problem, even when it's a different solution.
A good fit for
- New or renovated offices and clinics
- Buildings with low-e glass or heavy concrete
- Owners hearing signal complaints from tenants
Something else may fit better
- If only company laptops and tablets need data, better Wi-Fi may be enough See Next-Gen Wi-Fi →
For your IT or engineering teamTechnical detail
The design decisions, the end-to-end path and how the result is tested.
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Technical detail
The design decisions, the end-to-end path and how the result is tested.
Indoor coverage can only be as good as the signal source, capacity, bands, and carrier participation feeding the system.
Design decisions
| Design decision | What we need to understand | How we engineer it |
|---|---|---|
| Signal source | Measure donor cells, bands, quality, loading, and stability by carrier. | Choose off-air, small-cell, or base-station sources from supported carrier conditions. |
| Service zones | Map occupied areas, cores, elevators, stairs, parking, and exterior transitions. | Set coverage targets and antenna placement by space and construction loss. |
| Carrier path | Identify carrier approvals, retransmission consent, equipment, and monitoring obligations. | Build the program around supported participation rather than assumed compatibility. |
The end-to-end path
- CARRIER SOURCEMacro donor · small cellSupported bands and capacity
- HEADENDFilter · amplify · combineSignal conditioning and monitoring
- DISTRIBUTIONFiber · coax · remotesLoss-managed RF transport
- INDOOR SERVICEAntennas · phones · devicesMeasured coverage and quality
Strong indoor power does not prove usable service. Signal quality, serving-cell behavior, capacity, uplink, and carrier acceptance must all be verified.
How the result is tested
- Baseline test Capture pre-install carrier, band, cell, quality, and throughput data.
- Coverage test Walk every occupied, critical, vertical, and below-grade zone.
- Voice test Maintain calls through entrances, cores, elevators, and floor transitions.
- Data test Measure uplink, downlink, latency, and stability by supported carrier.
- Alarm test Verify headend, remote, donor, power, and transport monitoring.
- Carrier test Complete the required carrier review and acceptance process.
You might also be dealing with.
Coverage depends on which floor you lease
Make cell service a building amenity for every tenant.
Offices & real estateSee how it's solved Indoor cellularCase IC-05Calls drop in elevators, stairwells and parking
Cover the in-between spaces most plans forget.
Offices & real estate · Healthcare · Venues & hospitalitySee how it's solved Indoor cellularCase IC-02Calls drop in the hospital's interior and basement
Keep phones working for clinicians, patients and visitors throughout the building.
HealthcareSee how it's solvedNext Indoor cellular use case: Calls drop in the hospital's interior and basement → · About Indoor Cellular & DAS →
Tell us where the phones stop working.
Share what's happening and where. We'll recommend the right fix and the next step, starting from your floor plans or site details.