VoIP IPPBX is a communication technology that offers the convenience of phone calls over the Internet Protocol PBX properly.Now communicating via phone not only be done by relying on conventional or mobile telephone, but via the Internet or LAN can also be done.The main reason I picked this title Because it is still the high cost of communication in Indonesia in the conventional telephone and the local media is still minimal connection to use VoIP streaming connections.Therefore, people wear them too Because they are inexpensive or even can say "free" Because it is not in wearing conventional toll fees as well as to minimize stuck on a local connection with minimizing bandwidth on the codecs used in VoIP itself.We also can use VoIP services on mobile phones, laptops, or regular computer.To initiate a VoIP conversation.