DSL Upstream and Downstream

[frank]

Hi,
I am frank.
I have dsl internet at home.
I heard lot about downstream and upstream.
I would like to know
What is meant by upstream and downstream?

[henry]

Downstream means downloading information from the Internet to your computer. Information travels downstream when a web page is loading on your computer screen, or you open e-mail messages that someone sent you.

Upstream means sending information from your computer to the Internet. Information travels upstream when sending e-mail messages, hosting a web server, providing video streaming, or holding a video conference. If you have ever tried to send an e-mail with a large attachment, like pictures, large spreadsheets, or electronic presentations you understand how a sluggish upstream connection can really slow down your business.