The best thing about this system is that it has an excellent customer support team which helps us to resolve our queries within minutes of submitting them. I have not faced any issue with their services so far. It is one of the best VoIP systems available in the market currently. We are using this product for communication purposes only as we do not sell anything through its platform. Our business requires constant communications between various departments across different locations. This software allows me to communicate easily without having to worry about my voice quality or call duration.