PABX (Private Automatic Branch Exchange) is a tool Connectors (Switch) to manage incoming calls and telephone communications out efficiently and effectively in the office, office, Rukan, large house / terraced, Dormitory, Kost, and other buildings.
This tool can be applied and regulated in a different way in a variety of systems. Its function as a telephone dialing system to regulate the process.
Had some / many cable connections that lead to a switchboard. That is why there is the term "branch" in the PABX extension, because the "branch" or branch refers to the number of connections that are connected .. This tool is a sophisticated technology as it can be used as a phone, modem and fax machine, and can be used as a communication tool internal employees in the office.
How it works from this device is a modem that serves as the central control station. Whenever there is a new incoming call, the phone will be routed (routed) through this control station. Because in the system has included a specific code for each phone number at the office, or for each extension, the incoming calls will be routed to the right destination by using the code.