Sydney's in-building 4G and 5G cellular coverage specialists. Nextivity CEL-FI and Quatra distributed antenna system installer across Sydney and nationwide. We design, install, and validate all-carrier DAS and repeater solutions for hospitals, industrial facilities, and high-density environments. RF survey Sydney. No dead zones. All carriers. Full validation.
Building materials attenuate cellular signal by 20 to 40dB. Reinforced concrete, energy-efficient glazing, and metal cladding are not obstacles the macro network can overcome. The result is dead zones in the exact spaces where mobile connectivity has clinical, operational, or safety consequences.
Coverage in the carpark does not guarantee coverage in the ward. In-building 4G and 5G for hospitals, health networks, and critical facilities must be engineered to the building, validated against carrier thresholds, and documented. Assumption is not a coverage strategy.
AAA installs Nextivity CEL-FI smart repeaters and Quatra distributed antenna systems across Sydney and nationwide. Every RF survey is conducted on-site before any equipment is specified. Industrial cellular coverage for manufacturing and warehouse environments, hospital cellular for clinical and health networks — all validated to carrier standards.
Uncertified consumer-grade boosters are illegal under ACMA regulations. Every in-building cellular installation AAA delivers is carrier-approved and ACMA-compliant.
ACMA-compliant in-building cellular solutions validated across all carriers. AAA designs, installs, and certifies passive and active DAS for hospitals, data centres, and commercial facilities nationwide.
Every installation AAA delivers is tested against real carrier thresholds. RSRP, SINR, and download throughput measured at every zone. Results documented and handed over with the job.
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RF survey, system design, DAS and repeater installation, all-carrier validation, and documented handover. On live sites. All Australian carriers. No shortcuts.
We measure existing signal strength across all relevant frequency bands before specifying a solution. RF survey conducted on-site in Sydney and nationwide — dead zones mapped, building layout documented, carrier requirements confirmed. Industrial cellular coverage environments and clinical facilities surveyed under operational load. The design is produced before a single antenna is mounted.
CEL-FI G41 and G51 smart repeater systems for single-carrier in-building coverage. Carrier-approved, self-optimising, and ACMA-compliant. The right solution for hospitals, healthcare facilities, and commercial environments at mid-range scale.
Nextivity Quatra distributed antenna systems for large or complex buildings requiring multi-carrier, multi-band coverage. Quatra 1000 and 4000e platforms for hospitals, industrial critical facilities, and enterprise campuses where all-carrier coverage is non-negotiable. AAA is a certified Nextivity installer across Sydney and nationwide.
Post-installation walk testing across Telstra, Optus, and TPG/Vodafone. RSRP and SINR measurements documented per zone. Coverage verified against carrier performance thresholds before handover. No sign-off without passing results across all carriers.
As a Telstra Partner since 1992, our in-building cellular installations align with Telstra availability and resilience standards. We manage the carrier approval process and confirm every solution meets network requirements before go-live.
Where active DAS is not warranted, we design and install passive distributed antenna systems and hybrid solutions combining indoor and outdoor signal sources. Coverage where it is needed. Scaled to the facility.
Every in-building cellular project starts with a site survey. Every installation closes with carrier-aligned validation. There is no shortcut between the two.
Existing signal measured across all frequency bands. Dead zones mapped. Building materials and layout documented. Carrier requirements confirmed before design begins.
System design produced and submitted for carrier alignment before installation starts. Equipment selection, antenna placement, and cabling routes all confirmed in advance.
CEL-FI repeater, Quatra DAS, or passive distributed antenna system installed with minimal disruption. All cabling run to structured cabling standards. Every antenna labelled and documented.
Walk testing across all carriers post-installation. RSRP and SINR results documented per zone. Carrier acceptance managed. Full as-built documentation handed over.
We work on live, business-critical networks nationwide. One accountable partner. No disruption. Full documentation.
In-building cellular coverage is a dedicated system — typically a Distributed Antenna System (DAS) or an active repeater like CEL-FI — that captures or generates a carrier signal and distributes it through a building's internal structure, so mobile calls and data connect reliably on every floor, not just near external windows.
Modern building materials block signal. Low-E glass, steel reinforcing, concrete, and foil-backed insulation all attenuate cellular RF before it reaches the interior. The higher frequencies used for 5G make this worse, not better — they carry more data but penetrate less material. The result is dropped calls, failed emergency calls, and dead zones in basements, stairwells, and central floor plates, regardless of how strong the signal is on the street outside.
A Distributed Antenna System is a network of antennas connected by cabling or fibre back to a head-end unit, which is fed by a donor signal or connected directly to a carrier. It distributes cellular coverage evenly through a building instead of relying on a single external signal trying to punch through walls and floors.
CEL-FI is a carrier-approved active signal booster — it captures an existing outdoor signal, amplifies it, and rebroadcasts it inside, with no direct carrier network connection required. A full DAS is a larger, engineered system, often with a direct carrier feed, built for bigger sites or where the donor signal isn't strong enough to boost. We assess donor signal strength and building size before recommending which approach fits.
Yes. Our in-building cellular work is carrier-agnostic — Telstra, Optus, and TPG/Vodafone are all supported on the same system where the technology allows, so building owners and tenants aren't locked to a single network.
It depends on building size and donor signal availability, but a typical single-tenant installation runs from site survey to sign-off in weeks, not months. We start with a donor signal site survey to confirm feasibility and scope before any works begin.
