Every manufacturer has its own unique mechanism to handle human and outside interactions with the telephone switch. In most legacy systems the options are limited, restrictive and cumbersome. The advent of Asterisk changed all this with its “Dialplan”. It is tool and mechanism within Asterisk with a command language that unleashes unbelievable power and flexibility. Every Dialplan created is a set of instructions to handle inbound calls and outbound dials that come in and go out of this incredible next generation phone switch.