There are 2 redundant 45mbit T3 connections from the datacenter to the HQ. There are also 2 redundant 45mbit T3 connections to our ISP. The 5000+ clients are all connected via satellite and DSL. Up until about 2 or 3 years ago, they were all connected via satellite, but the latency sucks, and rain fade as well as iced up dishes caused downtime so they have all been outfitted with DSL as well. If there are telco issues, then they can fail over to just the satellite.