My knowledge of the two technologies are a little fuzzy and I'll have to review my notes if I need to go into more details, but one of the differences is, obviously, cost. If you only need 15MB of bandwidth, then its cheaper to get several T1s than it is to get 1 T3. On the client side, a device, I think a DSU/CSU, will aggregate the lines into one. That's why you sometimes hear companies say "One of our T1s blah blah." Questions like this pop up on the Network+ exam.
Your friend probably means better as in "T3 is faster than T1," same as we would say that OC3 is "better" than DSL.
However, in the business world, its not about which one is faster, its about which one will allow the business to stay within budget and still be competitive, since competitive equals using technology and money wisely.
Re: T1 or T3.. which one better?
11 years 6 months ago #21727