Business VoIP Service

What does Business VoIP service include?

  • Guaranteed call quality.
  • Free calls every month.
  • Use your existing business PBX & phones.


  • Wholesale international rates.
  • Free number porting for your entire business directory.
  • Range of business features included at no extra cost.


Our VoIP Technicians Love A Challenge

We're a flexible bunch at RDC, when it comes to meeting your business voice needs. We've been providing voice solutions for years and to cater to you, we also offer SIP trunks and analog hand-off. Simply call us if you want to discuss a creative solution. Our Technicians love a challenge!

New customer phone service offer


per line, monthly
1 - 9 business phone lines


per line, monthly
10 - 19 business phone lines
(Save 20%)


per line, monthly
20+ phone lines
(Save 40%)

Grandstream Phones & 3CX Cloud PBX Efficiency

Grandstream is a worldwide leading provider of business phone hardware. Grandstream phones and conference pods are robust and deliver high quality audio for professional business communications. Combine the latest Grandstream phones with a RDC power 3CX cloud PBX solution. Add an extensive list of user-friendly and customizable business features to your phone service, at no extra cost.

Grandstream phones deliver excellent sound quality. Each Grandstream IP phone can be instantly expanded with the addition of a 'side car' component for call management. We are a Grandstream Authorized Reseller and also support the Grandstream Android-based GAC2500 for conferencing.

RDC has been delivering business phone service to businesses, since 2012. We partnered with Grandstream & 3CX not longer after. The latest Grandstream IP based phones allow us to provide extremely reliable voice service over business internet services.