Signal Booster

INJAZ PRO engineer testing indoor mobile signal coverage with a Nextivity booster

Stronger Mobile Coverage Where Your Business Needs It

Weak indoor mobile coverage can interrupt calls, limit access to mobile applications, and affect everyday communication. Building materials, internal layouts, and the available outdoor signal can all influence reception.
Indoor cellular coverage solutions help bring mobile network signals into areas where reception is weak, supporting more reliable voice and data connectivity for employees, customers, and visitors.

How Does a Signal Booster Work?

In a typical off-air installation, an external donor antenna receives an existing mobile network signal. The system processes and amplifies that signal, then distributes it through indoor antennas or coverage units.

For larger buildings, a distributed antenna system—known as DAS—can extend coverage across multiple areas or floors. Nextivity’s CEL-FI QUATRA systems can use an off-air signal source, while supported configurations can also use a small cell. 

A Solution Designed Around Your Building

A professional deployment typically includes:

  • Site Assessment: Measuring existing coverage and identifying weak-signal areas.
  • System Design: Selecting equipment, antenna locations, and cable routes based on the building and required mobile operators.
  • Installation & Configuration: Installing and configuring the system to suit the selected solution.
  • Coverage Verification: Checking signal quality and testing calls and data performance after installation.
  • Monitoring & Maintenance: Reviewing system status and addressing changes that may affect coverage.

Equipment selection depends on the available signal, building layout, supported frequency bands, mobile operators, and applicable deployment requirements. Coverage and performance should be assessed for each site.

About Nextivity

Technology Focused on Cellular Coverage

Nextivity

 develops cellular coverage solutions for buildings and vehicles, alongside public-safety communications and private networking solutions. Its portfolio incorporates proprietary technologies, including IntelliBoost, designed to support intelligent signal processing and cellular coverage optimization. 

Relevant CEL-FI Product Families

  • CEL-FI QUATRA: Scalable in-building cellular systems for larger commercial spaces. The range includes single- and multi-operator options, depending on the model. 
  • CEL-FI GO: Cellular signal boosters designed to address in-building reception challenges using Nextivity’s IntelliBoost technology.
  • CEL-FI ROAM: Plug-and-play mobile cellular repeaters for vehicles, boats and fleets, keeping voice and data connected on the road or water.
  • CEL-FI CONNECT C41: A self-install cellular coverage solution intended for homes and small offices.

Features such as operator support, frequency bands, and 5G capability vary by product and regional version. Selecting the appropriate model is an essential part of the design process.

Improve Coverage Across Your Facility

Whether your challenge involves meeting rooms, reception areas, offices, or larger commercial premises, start with a clear understanding of your existing coverage.

Contact INJAZ PRO to discuss your indoor cellular coverage requirements and identify a suitable solution.

sales@injazpro.com

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Nextivity CEL-FI QUATRA 4000c cellular coverage system

CEL-FI QUATRA 4000c
The First Combined Public and Private Cellular Coverage Solution

Public Cellular Bands: 2, 4, 5, 12, 13, 25, 30*, 71*
(*Available only with Industrial Upgrade via WAVE Portal)
Private Networking Band: 48**
(**Available only with PVT port unlock)

As the market’s first neutral host cellular DAS coverage solution with the convergence of private networking, CEL-FI QUATRA 4000c combines the industry-leading cellular coverage that CEL-FI QUATRA systems are known for with CBRS private networking capabilities.

CEL-FI GO G43
Multi-Operator Cellular Coverage Solution


Region: Global
RoW Bands: 1, 3, 5, 7, 8, 20, 28L, 28U, 40

Combining unmatched performance with ease of installation, CEL-FI GO G43 provides “small box” stores, quick-serve restaurants, and branch offices a fast way to improve cellular connectivity for customers, employees, and operations. The system solves in-building coverage challenges for up to three mobile network operator (MNO) signals.

Nextivity CEL-FI GO G43 signal booster
Nextivity CEL-FI ROAM R41 mobile cellular repeater

CEL-FI ROAM R41
Mobile Cellular Repeater


Regions: Rest of World (APAC, EMEA, and Oceania)
Bands: 1, 3, 5, 7, 8, 20, 26, 28L

Perfect for nomadic applications, CEL-FI ROAM R41 cellular repeater is a plug-and-play cellular coverage solution that keeps people connected on the water or road. Whether you’re making calls during your cross-country road trip, streaming music on your weekend boating adventures, or have a fleet that requires cellular connectivity, ROAM R41 ensures you have reliable voice and data in transit. Suitable replacement for GO G31 and GO G32 (mobile systems).

CEL-FI CONNECT C41
Self-Install Cellular Coverage Solution for Small Offices, Retail, and Homes.


Region: Rest of World (APAC, EMEA, and Oceania)
Bands: 1, 3, 5, 7, 8, 20, 28L, 40

Nextivity CEL-FI CONNECT C41 coverage solution