Today, communication over Internet has brought revolution in the world by making people come closer. To avail Internet on PC, one requires availing connection from ISP. The Internet service provider is a business or organisation that offers consumers and businesses access to Internet and other related services. ISP or Internet service provider is also known as Internet access provider or IAP. The provider offers Internet access through various technologies like dial-up and DSL. Depending upon the services and geographical constrain, ISPs are defined as local and national providers. A national ISP provides access to most part of the nation, while a local ISP offers the service to limited geographical regions. Connecting to Internet requires a telephone line to dial-up an ISP using a computer and modem. The work of an ISP is to provide efficient route onto the Internet for connecting with the world. The ISP uses IP packet switching technique of the network for transferring the voice, video and data.
ISPs’ are the Internet access providers while VoIP providers deliver superior voice quality to Next Generation carriers, businesses and individual users. The main motive of any voice over IP provider is to offer low cost communication over long distance and international calling. VoIP providers offer services to wholesale carriers, contact centres, ISP’s or ITSP’s. With its state-of-art-technology, Voice over Internet protocol offers it end users with a completely flexible, scalable and reliable communication. The VoIP process is based on IP packet switching technique of the network. Seamlessly network transition in business helps to minimally affect the network operations during switching process.
The ISP provides access to Internet services, while voice over IP providers, use the Internet service to offer their VoIP services. Moreover, the communication through VoIP offers excellent voice quality with minimum latency and interruption.