[Asterisk-Users] Suggested System Specs - 20 ext, 8 Incoming Lines

[Doug Logan]

Hello All,
     We're looking to put in an Asterisk server to handle 20 extensions and 8 incoming lines (likely PSTN), voicemail etc. At some point we will be leveraging VOIP to add additional lines, and bridge two offices. What are the minimum system specs you would suggest? If you were not looking for the minimum, what would you suggest we run it off of? (Is there some rough formula for calculating aproximate needs as far as CPU/RAM is concerned?)
     We are also looking to do this in house, but it would be new technology for us. We need to have it up and running by Sept 16th. If we thought that we could not make this deadline, and wanted to do outsource this setup to speed things up, what would be the estimated cost for an installation? Thanks.

Doug Logan
Whitsett, NC