![]() This sort of conferencing was used for broadcasting from distant locations, but now, going one step further, satellite links are established using special trucks.īecause it was very expensive, this technology couldn't be used as part of common long-distance applications. Instead of cables, two frequencies were used, UHF and VHF, one for each direction. NASA used this type of communication on the first manned space flights. They consisted at first of two closed-circuit television systems that were connected through cable. This was developed at the same time as the television. Video chat is also known as video conferencing. If you think about it, who wouldn't like to see the person they talk while engaging in the conversation? But the question is how did it all begin? Video chat is something that is becoming more and more popular because it allows the users to hear the voice of the other person and see them at the same time. Nowadays, most people use the internet and all its features.
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