VoIP stands for Voice over Internet Protocol; VoIP is the technology which helps a user to make calls over the internet.Calls are measured in bits but not in minutes. VoIP is really a cost-effective method for business purpose. You don’t need specific hardware to use VoIP; this is the biggest advantage of using VoIP. The installation cost of VoIP is also less as compared to the analog telephone system. There are various VoIP number services who are giving the best class support to the customers.