What is round trip time (RTT) ?

What is round trip time (RTT) and how we calculate it? What is the RTT of VSAT internet communication ? Thanks!
beer9Asked:
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andypunCommented:
In a satellite network, Round Trip Time (RTT) is the time required for a signal to travel from a terrestrial system up to the satellite and back, or for a signal to travel from a satellite down to a terrestrial system and back up to the satellite again.

source: http://www.tech-faq.com/round-trip-time.shtml
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andypunCommented:
Sorry, was kind of in a hurry when i answered earlier and I missed the second part of your question.
Hopefully this should explain what you're looking for:

http://answers.yahoo.com/question/index?qid=20081120123217AADPrzQ
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Kamran ArshadIT AssociateCommented:
Hi,

RTT is already explained well in the above posts. I would like to add that VSAT has a minimum 500 ms. You can also read the below article;

http://en.wikipedia.org/wiki/Very_small_aperture_terminal
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beer9Author Commented:
Thank you! :-)
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