According to some, the concept of voice transmission over the network using a personal computer was born at the University of Illinois (USA). In 1993, Charlie Klein released a Maven, the first program to transmit voice over the network using the PC. At the same time one of the most popular multimedia applications on the network was CU-SeeMe, videoconferencing software for Macintosh (Mac), developed at Cornell University. April 1994 During the flight, the shuttle Endeavor NASA has transferred to the Earth it image using CU-SeeMe. At the same time, using Maven, tried to transfer and sound. The resulting signal from the Lewis Research Center in Mae did, connected to the Internet, and anyone could hear vote astronauts. Then one is embedded in another, and there was CU-SeeMe version with full features audio and video for both Mac and a PC. February 1995 the Israeli company VocalTec offered the first version of Internet Phone, designed for owners of multi-media PC, running Windows.
This is an important milestone in the development of Internet telephony! VocalTec hoped to use the very popular (text) channel Internet Relay Chat (IRC) as a means of bilateral communication between people who have similar interests. But the company failed to communicate with Eris Free Network (EFNet), supervising IRC, and informed about the potential increase in the schedule, so access to these public channels for Internet Phone was closed. A few weeks the company VocalTec settled his differences with the EFNet. During this time, was set up private network servers, Internet Phone, and already thousands of people have downloaded this program from its home page, VocalTec and started talking. In the same 1995 Other companies quickly appreciated prospects offered an opportunity to talk, being in different hemispheres, and without paying for international calls! On the market was bombarded with products designed for telephony via the Web. In March of 1996. there was another memorable event.
Then it was announced that a joint project called the ‘Internet Telephone Gateway’ between the two companies: the already known VocalTec and the largest manufacturer of computer telephony software for Dialogic. The goal was to teach work via the Internet an ordinary telephone, which between the Network and the PSTN gateway installed specialized. The latter is known as VTG (VocalTec Telephone Gateway) and is a specialized program that is used Dialogic voice board to interface with conventional telephone lines. Multi-channel voice board allowed, firstly, a system of VTG support up to eight independent telephone calls via the Web, and secondly, removed addressing the problem by assuming the conversion of conventional telephone numbers into IP-addresses (and vice versa). To talk to a single user in the product was enough bandwidth channel about 11 kbit / s (for modern products it it is the other) That’s a high possibility of sealing the channel and the low cost of communication set the stage for dramatic changes of the world of telecommunications. Approximately the same self in 1995 began to recruit more popular television, which can be taken from the satellite. It’s called television – satellite television. Such international name satellite tv around the world has become familiar in everyday life in early 1998. Since Satellite TV time is almost in every home.