Internet Service Provider

skydsl

Principle of operation
The skyDSL satellite internet connection works on a one-way data transfer circuit, i.e. it is used exclusively as a receiving channel. For outgoing data (e.g. page requests, emails, etc.) almost any conventional Internet connection will do (Dial-UP, GPRS, ADSL, Cable modem, etc.).
Because of the big asymmetry of the connection, when you have a transmission speed of up to 56 kbit/s and a reception speed of up to 16 Mbit/s, your Internet browsing will be more dependent on your terrestrial channel, even if not always. Let's see why. How does a page load from the Internet? We send a request to a server, to which the server responds by sending a data packet. On receiving this packet the client sends a confirmation and more packets are sent, but in larger quantities. When all the information has been sent, the client sends a final packet and closes the connection to the server. After that the browser analyzes the HTML code of the page and for each embedded object (pictures, flash animations, Java applets), opens new connections to the server, or servers. In the same scheme, the server passes us the pictures and all the embedded objects in the page in parallel. Since they are all transmitted simultaneously, the overall transfer rate increases. The more images and objects on the page, the higher speed will be, although the speed for each object separately will be the same. That means you will get the same speed with 50 images of 100 kilobytes each as with the 100 kilobytes page. The client side has to answer to incoming packets that they have succeeded. This is where the terrestrial connection comes into play. It's one thing to send confirmations for one picture, but it's another thing to send confirmations for 50 pictures. One user may not notice these delays, because it is difficult to overload the outgoing channel for normal surfing, but if you are working with a group - you should use a high speed for the return line. Of course, you can also use a satellite dish as a return line, but that's too expensive even for organizations.