A research shows that VoIP at present brings in around $6 billion in revenue. Nowadays, employees use their computers to dial voice calls. Organizations are replacing their on-site hardware with web-based services by subscription that can provide integrated text and voice communications. Read more about how IP telephony is bringing back the business phone call at: : http://it.toolbox.com/blogs/voip-news/small-cells-on-the-moon-70834