What is the difference between T1 line and DSL for small business?
How I can test the speed of my Internet?
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T1 is usually much more expensive, but has the advantage of not being effected by the distance from your exchange.  Performance of the two is similar.
ata9626Author Commented:
Verizon offers Dsl for small business but the upload speed is alot slower than what we are already using.
Verizon upload speed 128kbps.
Our T1 line upload speed is 1411 kbps.

but download speed is the same.
what exactly uploading means? and how uploading speed effects on our internet connection?


When you 'download' something from the internet you are essentially 'pulling' the file from another machine.  Uploading is basically the opposite - you are 'pushing' a file from your machine to another.

Most people do a lot more downloading than uploading.  Copying files to an ftp site is an example of 'uploading'.

Hope that made sense!
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ata9626Author Commented:
When I am sending an email (since it goes to the email server first) am I uploading the information?
If yes then if I change the service for my internet it effects on the speed of our sending emails?
Correct. Sending a large attachment over DSL will be a lot slower than sending it by T1 for example.  For normal emails there is no noticeable difference in speed.
You can check the speed of your connection here.

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