Voice traffic utilizes the same IP infrastructure and network used for data transfer and VoIP eliminates the need for two separate lines. It was found that businesses with a global presence can save a lot of money annually if they start using Voice over IP for integrated voice and data transfer. VoIP can be both quantitative i.e. cost savings & non-quantitative i.e. production efficient. Read more for benefits of VoIP at: http://it.toolbox.com/blogs/voip-news/the-various-benefits-of-voip-69940