VoIP or voice over Internet protocol is an advanced communication technology that routes users’ telephone call over the internet or an IP network. Business, corporate professionals and residential users are opting for next generation mobile high speed data transfer for making their work easier and simpler. Voice over IP allows the user to send and receive interactive videos, voice and image files through a single channel. As a matter of fact, this allows the user to be benefited with cost efficiency and better productivity. Availing the kind of VoIP solution depends upon the type, size and operations of a business.

VoIP solutions allow a vast array of services, software and hardware to work together and to create flexible, feature-rich communication solutions with many attractive benefits. An Internet telephony solution is a saving for any organisation that deals in longer distance or international calling, as it costs significantly less when compared to the traditional PSTN services. These advanced solutions even result better in terms of network integration, functionality, security, reliability and coordination among their various other services.

There are two types of business VoIP solutions i.e. call termination service and IP Centrex service. The call termination service is suited for SMEs or small medium enterprises, as calls are terminated by using public internet or privately managed IP networks. In a way, it increases the profit margin of SME business by reducing the monthly telephone expenditure by upto 50% compared to the traditional PSTN. For larger organisations, the IP Centrex or Hosted Centrex service of the Voice over IP solutions fit better. This solution deals with the virtual PBX replacement service. IP Centrex refers to a number of IP telephony solutions where Centrex service is offered to a customer for transmitting voice calls over IP network in packet streams. Thereby, IP Centrex is built upon the traditional benefits of Centrex by combining them with the benefits of IP telephony. In the IP Centrex service, the business house has to choose the service provider that offers PBX from their "host" soft switch at their POP over business's existing broadband connection.

The VoIP solution offers the cheapest way of calling over the Internet as it uses single cable for sending and receiving a data. Moreover, to ensure the best solution VoIP, one has to consider the ability of a network to support high-quality VoIP calls and best configuration of hardware and software.