The Cemtrex Smart Desk is currently capable of supporting most VOIP providers. There are a few exceptions that would include Cisco, Avaya, or others who may require you to use their hardware/phones with their services.
Currently, our SmartDesk Phone app supports RingCentral with support for Vonage and OnSip presently in development. Should a user have another VoIP service, they would like to use they could simply install the respective service’s Windows App, and
it will run on the SmartDesk and SmartPods without issue.