Damon Estep wrote:
In part I'm trying to figure out at extactly what point it might make sense for a small office to consider a T-1 vs DSL incombination with POTS or BRI. Also, I'm just very curious.
Michael -- Michael Graves [EMAIL PROTECTED] Sr. Product Specialist www.pixelpower.com Pixel Power Inc. [EMAIL PROTECTED]
o713-861-4005 o800-905-6412 c713-201-1262
Keep in mind that a 1.5mbps T1 is a full duplex circuit, 1.5 up and 1.5 down at the same time, you need a 3mbps DSL line to get 1.5mbps up and 1.5mbps down at the same time. Voip traffic requires 2 way data streams, wheras TYPICAL internet use is more down than up.
Here are a few things to consider:
Fractional T1's don't have the 4 to 2 wire conversions at your phone switch of you are doing VOIP or other digital telephony technologies. As a result, you should not have to deal with echo cancellation as much if you are on a fully digital circuit. This means your system is simpler and easier to maintain if everything is digital end-to-end.
However, T1 cards are far more expensive for a few lines than FXO cards so if you only need two lines, you might consider a BRI instead, and maybe POTS with DSL.
Fractional T1's are just an ordinary T1 with only a certain number of channels active. You still have all the hardware needed for a T1, but you are not paying for more capacity than you need on the actial telco connection.
For 4 or fewer lines, I would probably consider dual BRI's or quad FXO's (due to infrastructure cost) but for more than that, I think that the T1 solution is so much easier to work with that it wins out completely. Of course if you need to be able to add capacity quickly, then the fractional T1 is better.
Best Wishes, Chris Travers Metatron Technology Consulting
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