What is VoIP? Definition, Function, Working Principle, and Application

VoIP stands for

VoIP (Voice over Internet Protocol) is a technology that supports the implementation of voice and multimedia communications via the internet network. Utilizing digital data packets, VoIP converts voice into a format that can be transmitted over an IP network, as reported by the Federal Communication Commission.

This allows users to make phone calls with an internet connection, either via a computer, smartphone, or special VoIP device. VoIP offers various advantages such as lower call costs, flexibility in call settings, integration with other internet services, and high scalability.

Then, one of the considerations for using VoIP is cost efficiency. VoIP can reduce communication costs because calls use the existing internet network, avoiding traditional telephone costs. In addition, VoIP can also combine voice and data services in one network, reducing infrastructure and maintenance needs.

Using VoIP also allows international calls at lower costs compared to conventional telephone networks. Are you curious about VoIP, such as the application that makes it? Check below.

Applications Used to Create a VoIP Server

VoIP itself is a development process with certain tools. Reporting from Software Testing Help, some applications used to create VoIP servers include Ooma, CloudTalk, Asterisk, FreeSWITCH, Kamailio, and OpenSIPS. From this application, it can be seen how it works. In addition, in the process of working, the server needs to be monitored periodically, one of which is with the help of the Netmonk Prime tool.

How it Works

The working principle of VoIP is to involve sending voice in digital format via data packets over an IP network. The sound is encoded into data packets, which are then sent via the internet network to the recipient. On the recipient’s side, the data packets are re-encoded into audible sound.

This process involves data compression to optimize bandwidth usage and uses protocols such as RTP (Real-Time Transport Protocol) to deliver voice in real-time. VoIP also involves components such as gateways, VoIP servers, audio codecs, and signaling protocols such as SIP (Session Initiation Protocol) to manage calls and manage communication sessions.

In the last discussion about firewalls, we will explain more about the function of firewalls in VoIP.

Firewall Function in VoIP

The use of firewalls in VoIP networks is to protect VoIP infrastructure from various security threats. Firewalls monitor incoming and outgoing data traffic through VoIP networks, checking and filtering data packets according to established security rules.

Firewalls can ward off threats such as Denial-of-Service (DoS), malware, and infiltration attempts into VoIP networks. In addition, firewalls can also regulate access to VoIP services, limit connections to authorized devices only, and protect sensitive information such as call data and user identities from unauthorized access.

So, VoIP is a very useful technology, especially as the world’s development will enter the era of revolution 5.0 which relies heavily on long-distance network transmission-based technology. VoIP will be highly relied on and further developed so that the process is faster and has minimal delay.