What Is VoIP? | How To Work VoIP?

VoIP, or Voice over Internet Protocol, is a method used to turn our analogue voice signals into digital data, so we can make phone and video calls, among other things, using our internet connections. In doing this, we’re able to take advantage of much lower priced phone rates and line rental.

What is VoIP?

Voice over Internet Protocol is also known as Voice over IP, VoIP and IP telephony. It is a methodology that includes a group of similar technologies  all used to deliver voice and media such as fax, SMS, and voice and video calls, over IP networks.

Where these communications have traditionally taken place using the public switched telephone network, VoIP specifically refers to communications services that take place over the public Internet.

How to Work VoIP?

By now, you probably have a general idea of what VoIP is, but do you understand how it works? Do you know how many bits are in a conventional PCM voice sample or what “look-ahead” is used for? Do you know which two modes a caller can use to set up a call with SIP? If you don’t know the answers to these questions, you will after reading SearchVoIP.com’s technical guide to VoIP. Learn how call signaling and gateways work and why VoIP calls are particularly susceptible to delay and echo. Uncover the functional elements of SIP, H.323 and MGCP and why softswitches are not really switches at all.

If you’ve never heard of VoIP, get ready to change the way you think about long-distance phone calls. VoIP, or Voice over Internet Protocol, is a method for taking analog audio signals, like the kind you hear when you talk on the phone, and turning them into digital data that can be transmitted over the Internet.


This is certainly the easiest way to use VoIP. You don’t even have to pay for long-distance calls. There are several companies offering free or very low-cost software that you can use for this type of VoIP. All you need is the software, a microphone, speakers, a sound card and an Internet connection; preferably a fast one like you would get through a cable or DSL modem. Except for your normal monthly ISP fee, there is usually no charge for computer-to-computer calls, no matter the distance.

IP Phone:

IP phones look just like a normal phone; however, they are built especially for VoIP. Instead of connecting to your wall socket using an RJ-11 phone cable, IP Phones will connect to your router using an RJ-45 Ethernet connector.

And for business looking for a more advanced IP Phone setup the Avaya 9670G Phone Handset is part of Avaya’s flagship range.

Author: Rabin

I am a self taught white hat hacker and a B.sc in Hardware & Networking graduate from India. I am running a Blog for my community where I technical things in “English” which makes this experience even more interesting.

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