IP telephony is a set of communication protocols, technologies and methods that provide two-way voice communication (including video communication) over the Internet or any other IP networks.

IP telephony for the user provides the same functions as traditional telephony. A conversation or signal transmission between subscribers of urban or office PBXs occurs in real time. But the use of digital technologies and channels can significantly reduce the cost of long-distance and international calls.

In IP networks, all information is transmitted exclusively in digital form. Thanks to this system, data transfer is much faster. Depending on the channels, data packets are sent by different routes, the speed becomes higher, and therefore the quality of communication becomes better.

IP telephony is:

• Establishing communication with subscribers around the world;
• Optimizationoftelephonecosts;
• Increasedprivacyofconversations. 

Video conferencing is a technology for interactive interaction between two or more remote users, whereby video and audio information can be exchanged in real time between them.

Video conferencing is conducted subject to the use of special tools that can be implemented either on the basis of hardware solutions and systems, or in the form of software for PCs, mobile devices or browsers.

To provide participants with sound and picture, various peripheral equipment is used: cameras, screens, microphones, speakerphones, headsets, congress systems and projectors. As a data transmission medium can be used as a network of enterprises, built on different principles, and the global Internet.

Modern video and audio codecs, specialized network protocols, various signal processing algorithms make it possible to achieve high-quality communication on virtually any communication channels.