Voice over Internet Protocol (VoIP) is a technology that allows the user to establish telephone calls through a data network, converting an analogue voice signal into a set of digital signals, later sent through an Internet connection in the form of packets with IP addressing. Although not new, this technology has now reached a state of maturity and quality that allows its application in production environments through interconnection with conventional telephone systems. Likewise, the offer of equipment and services from operators has been growing exponentially.