VoIP (Voice Over IP) technology permits to use an internet connection in order to make vocal communications.
The voice goes over the public network as IP packets and afterwards converted to digital impulses before reaching its final destination.
The quality of the phone calls is superior to the one offered by mobile operators and costs are remarkably lower.
In order to use the VoIP technology it is necessary to have a data communication line with enough capacity to carry voice packets and a low latency. Every VoIP phone call uses around 20kbps.
Choosing to use a IP PBX (Personal Branch eXchange) it is possible to use both the VoIP lines and the traditional POTS or ISDN lines.
