An exellent article, describing in detail some concepts which should be taken into account if someone is interested to install VoIP at their premises with the use of Linux and Asterisk. Read this article an by the end ...

There you have it, a Firewall, PBX and Internet Telephony all in one box and for the price of a $500.00 dollar card and a generic white box computer. You could install your main server machine, a backup machine and still save money! All you need is a T1 and you're off and running....

Champ Clark III & Bruce M. Wink Both are partners in softwink.com an Internet security company that specializes in Intrusion Dectection Monitoring for the financial industry. They both can be reached at champ at softwink.com and cwink at softwink.com respectively. You can get a PDF version of the paper at Softwink.com