Generally speaking, telephone calls are made using mobile phones or landline phones. But VOIP calls do not expect the sender or receiver to be on a phone every time. They may also be on a computer. Basically, there are 4 types of VOIP calling methods available to the user. These are given below:

  • Computer-to-Computer
  • Computer-to-Phone
  • Phone-to-Computer
  • Phone-to-Phone
  • Mobile Apps


This type of connection is the oldest and easiest way for VOIP communications. The caller as well as the receiver should install the same software for making the calls. There is no other charge for making the calls even from one country to another. Apart from the computer, they need a microphone and speaker which may be inbuilt or external.


Making calls from a Computer-to-Phone is not free as the caller and receiver are not in the same network. So the caller has to pay the service provider an amount which is determined by the length of the call and location of the receiver.


For making calls from Phone-to-Computer, a special type of phone named IP/ VOIP phone is needed. It looks in like a normal digital phone but it is directly connected to the internet network instead of the phone line.


This is similar to traditional phone calls but it needs an extra device called an Analog Telephone Adapter (ATA). The adapter has two cables: one going to the broadband internet network and the other to the phone device. Calls are placed in the same way as traditional phone calls but it uses VOIP instead of phone lines.

Mobile Apps

Many software programs are available on various platforms like Windows and Android, etc., to make calls using VOIP. The same app should be installed at both ends of the communication. The caller can use a mobile phone and the receiver can use a tablet or a computer, as long as the app they are using is same. This method of communication is very flexible.