The easiest (in terms of solution, but it took me a while to think of it) - we had maybe 30 modems on that had to terminate on a single server - we stuffed it w

The easiest (in terms of solution, but it took me a while to think of it) - we had maybe 30 modems on that had to terminate on a single server - we stuffed it with RS232 cards, the problem was that Windows Server came with only 5 incoming licenses on terminal services, and we had to connect everything on the other side to the inside network. And it was expensive (this was 2004), so I had to find a way to do it on XP. The solution - just install vmware player with linux, pass the com ports to the linux virtual machine and use the nat that it provides. We could connect as much as needed for the price of single XP licence. (we could not use straight linux box due to "REASONS")