Background: I have been using PBX In a Flash for a while now at my workplace to handle a very tiny call volume. I am now considering setting up a server and providing business phone service to small local businesses via VOIP. Questions: 1. What are recommended system requirements for PBX In a Flash? 2. Do these requirements change significantly based on the call volume? 3. How much bandwidth is required for a SIP or IAX2 call? 4. Does this number stay constant? (For Example: If 20 more calls are taking place do you need 20X the bandwidth?) 5. With the above questions in mind what do you think abut a dedicated hosting service like this:http://www.esecuredata.com/Pricing/Servers.aspx ? Has anyone tried this? Thanks a lot for any help.