I am planning to run Asterisk in a Pentium 4 2Ghz CPU with 1 GB RAM. I read the white paper and mentioned that asterisk requires quite a lot of resource when processing simultaneous calls. If we use it to support 8 concurrent IVR calls, how much resource will it take? Is my current server specs sufficient? Anyone can share on planning the hardware requirements for Asterisk? We are planning to use Dialogic card.