In-building enterprise cellular solutions

Spotty cellular coverage, poor voice quality, dropped calls, and dead zones continue to plague occupants in middleprise buildings. Cel-Fi QUATRA is an Active DAS Hybrid that solves this problem. It is an affordable, all-digital solution. It provides uniform, high quality cellular signal throughout a building, and is scalable to the size needed. Cel-FI QUATRA is carrier approved and guaranteed network safe.

Unlike older analog boosters and passive DAS technology, Cel-Fi QUATRA delivers a cellular signal with up to 3 times the coverage footprint, utilizing category cabling for RF and Power over Ethernet, with no signal attenuation right to the perimeter of the building. Cel-Fi QUATRA can be installed in just days (compared to months typical of other solutions), and at a price point that meets the middleprise budget.

Performance Leader: Up to 100 dB
Active DAS Hybrid
Single or Multi-Carrier Solution
3G / 4G / 5G for Voice and Data
Carrier-Approved and
Unconditionally Network Safe
Scalable PoE Category Cable
Solution with Fiber Expansion
Remote Monitoring and
Management via WAVE Platform

About Cel-Fi QUATRA

The QUATRA Solution

The majority of cellular phone calls take place inside, but cell networks are outside. 80% of business users inside complain of poor coverage or dropped calls. A building’s materials, while improving energy efficiency, will block or inhibit cellular service from the outside network. To exacerbate the issue, cellular coverage is increasingly not optional. In fact, cellular coverage can be considered a safety or even regulatory requirement depending on the region. Building owners need a high-quality solution that can serve the middleprise and not take a year to deploy.

Integrators and Carriers have partnered with Nextivity to deliver a smart solution designed for middleprise buildings – Cel-Fi QUATRA solutions.

  • Cel-Fi provides the QUATRA BOM Estimator to help installers select the appropriate equipment in the right quantity, to eliminate the heavy cost / time of the planning effort.
  • Cel-Fi’s all-digital, scalable, PoE category cable solution makes it ideal for Single or Multi-Carrier environments.
  • Cel-Fi created a new solution category that combines its core technology with the architecture of an Active DAS – to deliver an Active DAS Hybrid – built for Installers.

Speed of Installation, higher quality in-building cellular solutions, and cost savings – are some of the reasons building owners, facility managers, and IT professionals are making the smart investment in the Cel-Fi QUATRA solution.

A Solution for the Carrier

Cel-Fi QUATRA is designed to improve indoor signal coverage without any risk of interference on the mobile network. Cel-Fi QUATRA provides a sophisticated network-safe solution that has been engineered to deliver multiple levels of network protection:

  • Uplink power control to prevent desensitizing the network
  • Echo-cancellation and feedback control
  • Uplink muting, when handsets (UE) are not detected
  • Signal qualification (channels are individually qualified, so noise or very poor signals won’t be amplified and degrade the network)

The Cel-Fi WAVE Platform cloud-based portal enables an operator to monitor equipment and network KPI’s, such as channel configurations, RSRP, RSCP, SINR, and systems gains, providing control and optimization insight.

Which QUATRA is right for you?

QUATRA 4000/4000i

Multi Carrier

QUATRA 4000e

Multi Carrier


Dual Carrier


Single Carrier




QUATRA 4000/4000i/4000e



Carrier Support Capability per Network Unit Multi Dual Single
Scalable Coverage: NU to CU 1 NU to 6 CUs 1 NU to 4 CUs 1 NU to 4 CUs
IntelliBoost Processor: Max System Gain Up to 100dB Up to 100dB Up to 100dB
Off-Air Donor Source Yes Yes Yes
Supercell Donor Source Yes No Yes
Fiber Expandable Fiber HUB / Fiber Extender Fiber Extender Fiber Extender
All Digital: RFoE & PoE Yes Yes Yes
WAVE Portal with Remote Management Yes Yes Yes

Case Studies

Learn how customers have used Cel-Fi QUATRA to solve their cellular coverage issues.

Cellular coverage inside airplane hangars

Cellular coverage on medical campus

Reliable coverage for offshore oil rigs

Cellular connectivity for mobile treatment

Buy Now

Find out where you can buy a Cel-Fi QUATRA in your region.