摘要:PABX is an electronic device that regulates the relationship connecting thephone automatically and programmed. Another function of PABX is to provideconvenience and benefits of telephone communication, for example, to move,stop or merge conversations that can be done by pressing a certain code on thetelephone. In other words PABX can be said as a mini local central working inthe area that is not so widely with jumkah phone users a lot.