load balancing 5 dsl lines on a routerboard 1100

I have 5 DSL lines feeding in to the RouterBOARD 1100 and 1 line going out of there to
an Enterasys switch to supply Internet service to around 40 clients through a Motorola
Canopy WISP network. We installed almost 1 year ago with the 1100.

I have access to the RouterBOARD through WinBox and noticed that only WAN1 is really
handling the entire load, with the other 4 WANs occasionally handling 1 packet here
and there. It appears to me that this router can be programmed to spread the load
more efficiently across the 5 DSL lines.

Any direction on where to get a layman’s version of what to do and how to program this to get the most throughput from the routerboard would be greatly appreciated. Trying to learn but don’t know the difference between a NAT a PCC or a BGD or otherwise.

Read the wiki. Configure PCC.