In part 1 of this series, we saw what VoIP is and how it is synonymous to traditional phone calls. We also listed some advantages of VoIP over traditional phone networks, that it is possible to set up your own VoIP network for use within your company. Finally, we saw that VoIP calls can be automated. One day your devices, such as home protection or a stock market ticker, will make an audio or video call to you via VoIP if something interesting occurs.
In this part, we will see how a VoIP call works, using VoIP calling software / device and a network protocol named SIP (Session Initiation Protocol). Continue reading “Conversations with Internet: VoIP part 2”