| VoIP or Voice over Internet Protocol denotes a | | | | ways to make a call through VoIP. Here are they: |
| general term for a group of methodologies, | | | | ATA (Analog Telephone Adaptor) - It is the most |
| transmission technologies and communication protocols | | | | common and simplest way to make a call. The ATA |
| for the allocation of the voice communication session | | | | will allow you to connect a phone to your Internet |
| over the IP networks like as the Internet. Besides this, | | | | connection or your computer to use VoIP. Generally, |
| many other terms often encountered with VoIP are | | | | ATA is a device that works as the analog-to-digital |
| Internet telephony, IP telephony and voice over | | | | converter. When an analog signal is generated from |
| broadband as well. | | | | your traditional phone, it will then convert it to a digital |
| Session control protocols are employed by VoIP | | | | signal to transmit it over an IP network. The thing you |
| systems to control over the set-up and tear-down of | | | | need to do for establishing a VoIP call is just split the |
| voice calls along with the audio codec that performs | | | | ATA out of the box and then plug the cable of your |
| encoding of the speech to transmit over an IP network | | | | traditional phone into the wall socket of ATA. In some |
| as the digital audio through an audio stream. The usage | | | | cases, you may need to install some additional |
| of codec can be varied depending on the | | | | software to configure the host PC. |
| implementations of Voice over IP technology. Some | | | | Computer-to-Computer - It is one of the easiest ways |
| implementations may support high fidelity stereo codec | | | | to make Voice over IP calls. The best thing about this |
| while others may support narrowband and | | | | method is that you do not even have to pay for a long |
| compressed speech as well. | | | | distance call. Lots of software are available in the |
| VoIP can be implemented in various ways using open | | | | market and most of them are free or charged very |
| protocols and standards and proprietary as well. Here | | | | little. For establishing VoIP calls, the things you will |
| are some technologies that are generally used to | | | | require are a software, speakers, a microphone, a |
| implement Voice over IP. | | | | sound card and an Internet connection preferably the |
| - IP Multimedia Subsystem (IMS) | | | | first one like the DSL modem. You only have to pay |
| - H.323 | | | | the monthly ISP fee and nothing for the Voice over IP |
| - Session Initiation Protocol (SIP) | | | | calls whatever the distance is. |
| - Real-time Transport Protocol (RTP) | | | | IP Phones - Apparently there is not any major |
| - Media Gateway Control Protocol (MGCP) | | | | difference between a traditional phone and an IP |
| - Session Description Protocol (SDP) | | | | phone. However, an IP phone uses a RJ-45 Ethernet |
| Voice over IP technology has the potential to rework | | | | connector instead of RJ-11 connector like as the |
| the World's phone systems entirely. This can easily | | | | traditional phone. This will directly connect the IP phone |
| alter an Internet connection into a way that can | | | | to the router. There are all sorts of necessary |
| facilitate free calls. The most practical upshot of Voice | | | | software loaded in an IP phone to handle a Voice over |
| over IP is that one can entirely bypass the phone | | | | IP call. On the other hand, Wi-Fi phone allows the users |
| companies to make free Internet phone calls by using | | | | to make a VoIP call from any Wi-Fi hot spot as well. |
| some available VoIP software. That is really | | | | So, what are you waiting for? Just go and search the |
| unbelievable! | | | | free VoIP software in online to download into your PC |
| Nowadays, there are three common but different | | | | and then enjoy the gift of Voice over IP technology! |