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In-Building Cellular with Cel-Fi Nextivity


GCL is proud and excited to be partnering with Nextivity – the Global leader in smart cellular coverage solutions and the innovators behind Cel-Fi products, which optimise cellular coverage in enterprise, business, residential, and transportation applications.

The GCL installation and technical engineer teams have completed full training to achieve full partner status, giving us the privilege of being able to supply our customers with the only carrier‐grade intelligent cellular enhancer.

With millions of systems operational since 2009, Cel-Fi has proved to be unconditionally network safe and has won multiple awards. These include Multi-Tech Company of the Year – Innovation Leader for Cellular Technology at the American Business Awards; and Product of the Year for IoT Evolution.


How Cel-Fi Can Boost Your Business

The frequency of workers that have to endure bad cell coverage is alarming – 83% in healthcare, 80% in retail, and 82% in warehouse and distribution.

Cel-Fi provides the complete resolution, with its Award-winning Intelliboost chipset, embedded software, radios antennas, apps, and cloud integration.

Cel-Fi can be Installed in all types of building environments, large or small, from hospitals and hospitality venues to non-profit organisations and marketing/PR firms.


How Cel-Fi Eradicates Bad Coverage

Using innovative engineering and pioneering processes at the forefront of technology Cel-Fi is able to eliminate cellular dead zones and ensure dropped calls and terminated data sessions are a frustration no more.

Key advantages of Cel-Fi include improved voice call quality and data rates.
Due to the increased performance levels of Cel-Fi, you can also see customer service and industry specific improvements, such as:

  • Increased staff safety, efficiency, retention, and wellbeing
  • Increased customer dwell time, impulse purchases and spend
  • Increased rentable/property value
    Improved access and business communication


The Cel-Fi Product Range Provided by GCL:



For small office/home office, small business, and residential applications, up to 15000 sq. ft.

Features include:

•          Carrier-grade, smart signal booster

•          3G/4G/LTE 

•          Can relay two (2) Band One // 3G and 4G LTE

Benefits include:

•          Boosts cellular coverage

•          Data and voice support

•          Deploy the unit anywhere in the network, with full frequency coverage



For Enterprise and Middleprise buildings:

•          Best cost per square meter

•          Can be deployed in days

•          Intelligently optimises for environmental (wireless) changes

•          Eliminates interference with the network

GCL is a certified professional installer of Cel-Fi, including QUATRA and only certified partners can:

  • Purchase QUATRA
  • Commission QUATRA
  • Manage and service QUATRA
  • Remotely monitor QUATRA
  • Provide an SLA
  • Enjoy recurring revenues on QUATRA
  • Register projects


Simplified Setup of Cel-Fi and Its Cloud Based Management Core Technology – WAVE

Users can easily set up and use Cel-Fi through the WAVE mobile and computer applications.

The Cel-Fi WAVE portal can be accessed through the dashboard interface or it can be integrated via APIs.

  • Cel-Fi device and asset management
  • Data modelling and reporting
  • Mobile and computer applications
  • Globally trusted carrier-grade security

Both the app and portal are available on the App Store and Google Play.


Now introducing new Cel-Fi QUATRA 4000c 


Cel-Fi QUATRA 4000c is an innovative solution combining two important features: reliable public cellular coverage and the ability to create a private network using the CBRS technology.  


Discover the Advantages of Private Networking 


With the ability to integrate Nextivity HARMONY Private Networking, Cel-Fi Quatra 4000c allows you to double down on security through tailored encryption and authentication protocols. Ensure that sensitive information remains within their own infrastructure, reducing the risk of data breaches or unauthorized access. 


Private Networking also allows you to optimize your bandwidth, prioritising network resources for critical applications, ensuring consistent and reliable performance. 

As increasingly digital technologies demand more from our networks, having a private network to provide a dedicated and reliable communication channel for IoT devices becomes crucial, facilitating seamless connectivity, data transfer, and control over the IoT system. 


Optimal performance, Optimal install 


Well Suited to a wide range of enterprise environments, QUATRA 4000c offers optimum performance, is easy to install, and can be deployed quickly. The system utilizes category cable architecture, allowing us at GCL to set up and improve in-building cellular signals within days, to improve in-building signals within days (in comparison to the months required for traditional Distributed Antenna System [DAS] installations).  


Talk to us about your requirements today

Contact Us

Talk to us about your requirements today

Call our office on 020 3906 6070 or alternatively email us at

Contact Us