Start your VoIP business with DeNoVoLab.

Class 4 Fusion is an all in one switch that gives you full-features for your termination and origination traffic.

Free 500 ports

Sign up now to benefit from our 500 free ports offer. We are giving you 500 free ports so that you can see how well the product can work for live traffic.

24 by 7 Support

Here when you need us most. We are on hand to help around the clock. Our support service offers friendly, expert advice 24/7.

99.999% SLA Guaranteed

We know how important your business if, and with our professional expertise, we offer our clients a 100% uninterrupted switching experience.

Welcome to DeNoVoLab

Our Class4 switch gives you the power to fully automate your business.

Class 4 Fusion is a robust and powerful VoIP that serves all traffic needs.

  • Perfect for A-Z Traffic
  • Ready for US Traffic
  • Support for Origination Traffic

A True Telco-in-a-box solution

Class4 Fusion is an innovative all-in-one solution capable of integrating all business workflow through a single platform.

  • Routing
  • Switching
  • Billing
  • Client Portal
  • Vendor Portal
  • Agent Portal

Unique Features

Full Set of API integration

Thanks to our smart API,integrating your own application with Class 4 Fusion is simple and stress-free.

Free LERG and LRN

Class 4 Fusion offers you free LERG and LRN updates out of the box, so there is no need to pay for additional services.

Extremely High Performance

Class 4 Fusion not only offers high performance, but can also offer you significant financial savings. Class 4 Fusion can terminate in excess of tens of thousands of CPS on just one dual server.

Fully Automated

Class 4 Fusion allows you the time to focus on what really matters. Automated rate generation, auto fraud block and invoicing leave you free to focus on the bigger picture knowing that the day-to-day operation is taken care of.


Explore a full payment platform with easy pricing method

as low as 0.31/port

Flexible card charge



as low as 0.25/port

Install on your own servers or cloud.

RPM Install Docker Install
Buy License

Build a successful VoIP business

Empower your VoIP business with smart automation and full flexibility.

A-Z traffic
US Jurisdiction traffic
Origination traffic
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