How Does VOIP Work???

VOIP basically stands for voice over internet protocol…

How does VOIP work???

It seems to be a mind-boggling term fitted only for Geeks… But the fact is that its basic principle is the same as how many people use computers to record their voices with the use of a microphone… It starts with the computer sampling the sound that it hears from the microphone at the rate of a thousand times per second…

After that, the computer then stores the said samples in memory and the record can now be played and replayed by the user… VOIP, however, transmits these samples rather than save them on the local hard drive… Recorded audio is passed on to the internet protocol and to the network links so that a listener using another computer can hear the recorded voices… Of course, there are other processes involved in voice over internet protocol…

One is audio compression… Using a compressor/de-compressor (CODEC), recorded voices can be made to take less space and frequency range… Frequencies inaudible to the human ear are unimportant so they are taken off…

Another process is packetisation, which collects the recorded sound samples and puts them into bigger chunks and then places these chunks in data packets that are going to be transmitted, each packet usually containing 10-30 milliseconds of audio… And yet another process included in VOIP is data redundancy… Packets of data are being sent not just once but multiple times in order to make up for data loss that sometimes happen during the transmission..