The absolute minimum total amount of delay is variable, due to the satellite staying in one place in the sky, while ground based users can be directly below with a roundtrip latency of 239.6 ms, or far to the side of the planet near the horizon with a roundtrip latency of 279.0 ms.įor an internet packet, that delay is doubled before a reply is received. If all other signaling delays could be eliminated, it still takes a radio signal about 250 milliseconds (ms), or about a quarter of a second, to travel to the satellite and back to the ground. Even at the speed of light (about 300,000 km/s or 186,000 miles per second), this delay can be significant. They may also need to ask their ISP if their modem allows for them to access secure websites.Ĭompared to ground-based communication, all geostationary satellite communications experience high latency due to the signal having to travel 35,786 km (22,236 mi) to a satellite in geostationary orbit and back to Earth again.
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If they are using other Satellite ISP’s, I would recommend having them contact the ISP directly to get more information on how to disable this function. For HughesNet users they should be able to turn this function off on their modem, if they are not sure how to do this they will need to contact them directly. It is recommended that if their ISP uses an accelerator that they turn this feature off, as it seems to cause issues when connecting to a secure site.
This causes issues with synchronous communications, causing them to get errors or preventing them from sending or receiving data. This results in the server sometimes sending a reply saying it did not receive the packet, even though the packet may be in transit. This Latency can impact initializing a secure internet connection, due to many packets being exchanged back and forth between the client and the server. The signal has to travel from earth to the satellite and then back to earth. Satellite internet when compared to DSL, High-Speed connection (coax/fiber), or other ground type connections, have a high latency due to how the signal is transmitted. Due to the nature of this matter, this appears to be caused by how the ISP handles connections, such as using accelerators or blocking connections to secure sites. We have heard of this issue from clients using satellite internet sometimes not being able to access Canvas or being able to login. If you are unexpectedly redirected to the sign-in page while using a web site, please contact dishNET or WildBlue for help changing your modem’s configuration.
Some modems provided by dishNET or WildBlue prevent access to secure web sites.Satellite internet can experience issues when using Canvas.We recommend high speed/broadband internet from either a cable company or a DSL service.