ConceptNet is a common sense reasoning framework/database from the MIT Media lab. From their website "ConceptNet is a freely available commonsense knowledgebase and natural-language-processing toolkit which supports many practical textual-reasoning tasks over real-world documents right out-of-the-box".  For a detailed explanation of the type of reasoning it supports and how it works check out either of the papers found on its home page. Right now though, I'm going to run through some ways you could use it and hopefully you'll be able to think of many more.

To cut straight to the point, the development version of VoIPER is essentially at a stage where it is ready for testing against SIP servers. While I can test open source servers and what not myself, I would also like to test proprietary SIP compliant devices as I've had reports the current version has killed a number of hardphones and proprietary softphones.

Anyone with access to Cisco, Avaya, Nortel etc. hardware or proprietary software, and would like to help out , can contact me at nnp [at symbol] unprotectedhex.com. Im interested in testing pretty much anything so phones, gateways, proxies etc are all fair game.