Our company has 2 locations, 300 miles apart. We are currently looking to upgrade our main location T1 to 2-3 T1s, and also our remote office from DSL to T1. The remote office is in downtown Chicago. Does anyone know any good low cost T1 providers there? And the main question I have is, I want to possibly go digital with our office phones. Currently each office has its own number, and we would like to have one number, and have voip so that users call in the main office, hit an extension and poof they goto the remote office. I assume that it doesn't matter what ISP is there, as long as they have one, and the hardware on site will do the call routing etc? Any exampls of units to do this?