What is VoIP and how does it work?

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If you have ever used a telephone using internet media such as calls from WhatsApp, Skype and other media, you should know that what connects your voice to the person you are calling is VoIP.

What is VoIP?

VoIP stands for Voice Over Internet Protocol or can also be referred to as IP Telephony, Internet telephony or Digital Phone is a technology to be able to communicate remotely using an internet connection. Analog voice signals will be processed or changed into digital data and sent in the form of data packets in a real team through the network. So, the data will not go through analog voice signals like how the phone works in general. It can be concluded that VoIP is a voice technology that is sent using media such as Internet Protocol or IP.

Within the VoIP network, the user makes a call by using a device, either PC or a regular telephone. There are many advantages that you can do with VoIP, such as lower costs than traditional phone fees because the IP networks used here are global, and maintenance costs can be reduced because the voice and data networks are separate.

VoIP as an open source protocol has been widely applied to various standard uses. The following types of protocols use VoIP, namely 323, MGCP or Media Gateway Control Protocol, Inter-Asterisk eXchange (AX), Session Initiation Protocol (SIP), Session Description Protocol (SDP), Media Gateway Control Protocol (MGCP), Real-time Transfer Protocol (RTP).

For 323, it is an old protocol type that has implemented VoIP for use in long-distance traffic, such as LAN (Local Area Network), but currently, its use is starting to be limited.

The technology behind VoIP

The technology developed makes it possible to build their own telephone exchange to the telephone set. VoIP technology is the basis of the Next Generation Network (NGN) as well as the 4G cellular network used by telecommunications operators. The VoIP technique adopted by Amateur Radio to use the internet as a long-distance relay is known as eQSO.

In VoIP communication, the user makes a telephone connection through a terminal in the form of a PC, using an application to make calls.

Voice Over Internet Protocol (VoIP) is also known as IP telephony, defined as a system that uses the internet network to send voice packet data from one place to another, using the IP protocol intermediary (Internet Protocol). In short, VoIP may pass voice traffic in the form of packets through local and global networks based on packet-switch networks.

Since it mainly uses the capability of the internet network, you’ll need to use something in order to make you safer online. VPN is the answer here. Aside from installing certain apps, you can also download Chrome VPN Extension, which is easier. With it, you don’t have to worry much about getting the risks of cyber attacks.

VoIP functions

Then what is the function of VoIP? You need to know that the main function of VoIP is as a medium for long-distance voice conversations that use the internet as a communication medium. By using the internet, the cost for these conversations can be much cheaper than when you use a conventional telephone.

In addition, using VoIP will obviously not affect you where you can call anytime and to any number. This is what makes many people have started using VoIP, and gradually, conventional telephones will also be abandoned.

The advantages

Using VoIP, there are many advantages and benefits that are useful for VoIP phone systems because using VoIP is easy to install and configure. Even ordinary people can use start using VoIP anytime they want/

In addition, VoIP is also useful for lowering the cost of calls so that it can save, especially for a company scale. It is very suitable to use VoIP because, for personal use, it can save up to 80-90% total cost.

Not only that, using VoIP has very good advantages because the voice can be heard clearly and high as well as smooth and really audible, and it is easy to manage VoIP internet services because all call records are managed on a computer. VoIP also has various features, such as a speed dial feature that makes it easy to call on the phone without pressing numbers any longer. It also has a Limit Duration feature which is useful for limiting the length of the conversation, which can be adjusted as needed.

Not only that, but there is also a destination limit feature, which is useful for limiting the number of telephone destinations, a time limit facility that is useful for limiting the time of phone usage, and the last is a multi-password facility which is useful for controlling telephone users based on their respective passwords.

How it works

As we have explained, the way VoIP works is by changing the analog sound coming from the speakers to then be used as a digital data package. The data packet will be sent through and continued on the Hub or router or ADSL model using the internet network so that it can be sent to the place or destination address.

Sending signals to remote destinations or sending data packets can be done digitally. That is, before voice data is transmitted, the analog signal will first be converted into a digital signal by utilizing a converter called ADC or Analog-Digital Converter. Only then will the modified data be sent directly to the recipient.

When the data has arrived at the receiver, the system will do its job automatically, where it will return the data to analog by using a DAC or Digital to Analog Converter. As for a simpler concept in understanding how VoIP works, there are two computer devices that are connected to the internet network. Both devices also use VoIP applications.

By calling using VoIP, many advantages can be taken. Among them is in terms of cost, it is clearly cheaper than traditional telephone fees, because IP networks are global so that international relations can be reduced by up to 70%.

In addition, maintenance costs can be reduced because the voice and data networks are separated, so that the IPs can be added, moved and changed. The reason is because VoIP is easy to install, unlike traditional telephones which must have their own ports.