IP telephony is very popular. This in its own way innovative form of communication opens up completely new horizons for personal computer users and all people.
IP and IT telephony are essentially the same thing. This type of telephony is becoming more popular every day. Until recently, the Internet and the telephone were completely different things that could not be combined in any way. Now, IP (IT) - telephony has appeared. This is a type of communication, thanks to which the user of a personal computer can easily call relatives, friends or colleagues without leaving the workplace. In this case, communication with another user will be carried out using the Internet itself or some other IP network.
History of appearance and use
The communication technology itself appeared a long time ago, back in the 80s. They began to actively distribute and use IP-telephony technology already in 1995. The technologies that were used before cannot be compared with those that are used today. For example, sound compression used to be carried out using GSM technologies. Until recently, this technology was not used in Russia in any way, and in the United States of America it began to be used only about 7 years ago. Today, for the transmission of information (including compression and decompression of sound), completely different technologies are used that bring IP telephony to a completely different level.
Advantages of IP telephony
This kind of communication has many advantages. For example, from an economic point of view, a person will spend much less money on making such calls using IP-telephony. This will be even more relevant if a person makes long-distance or international calls quite often. The next advantage is that a person can easily make a call to make a call either to the interlocutor's computer or to the phone. In order to use IP-telephony, you need to connect special gateways for IP-telephony. With the help of these gateways, the user just gets the opportunity to make a call to both the phone and the computer. The principle of operation of such telephony is that this gateway, which on the one hand must be connected to the phone, and on the other to the IP network, receives a special signal and digitizes it. Then, after this process is completed, the incoming signal is divided into special data packets and compressed to the optimal size. This data is then sent to a special address.
