http://evangelyze.net/cs/blogs/tony/archive/2009/02/22/locking-down-voip.aspxVoice networks have always been exposed to certain types of attacks. Data networks have a much larger threat environment to worry about. Converging the two seems to create a whole greater than the sum of its parts in that the merging of voice and dataenCommunityServer 2008.5 SP2 (Debug Build: 40407.4157)