Voice over Internet protocol (VoIP) systems cost 50 to 75% less than private branch exchange (PBX) systems, especially if you install it in the cloud. One can reduce the cost of VoIP installation by understanding the costs associated with VoIP onboarding. Read more at: http://it.toolbox.com/blogs/voip-news/5-costs-associated-with-voip-onboarding-70021