[Freeswitch-users] Newbie question. Where to install Freeswitch?

I am about to build myself a new PfSense box at home as I want Gigabit wirespeed routing between two subnets and then found FreeSwitch. It appears you can install FreeSwitch on pfsense and that would make sense from a consolidation and power usage factor but it doesn't seem advisable to put your Telephony app on your firewall. That a real concern or am I being a little too paranoid (I work in IT). ;-) I understand that FreeSwitch could run on an Alix 2D3 (my current PfSense machine) but am wondering if it's a little underpowered. (AMD Geode@500MHz with 256Mb RAM). I don't see much documented about resources and where to place FreeSwitch. Any recommendations? Cheers in advance, Brett.