VoIP is a communication protocol that delivers voice communications over Internet. VoIP can be usable by three ways.
- Dedicated IP phones such as Cisco, Avaya IP phones
- An analog telephone adapter
- Softphone – it’s basically an application just like a telephone where a number can be dialed
The biggest advantage of VoIP is the reduction of monthly telephone bill. A service provider is needed to activate VoIp and these service providers compete with each other on the basis of minutes.