Animation about Voice/VoIP/UC Security Attacks

Here is an article and animation about some voice/VoIP/UC security attacks. Focused on packet issues for VoIP, SIP, and RTP, but sort of interesting due to the animation. Might be useful to some people to explain some of the issues. It doesn't cover key issues of toll fraud, harassing calls, TDoS, fraud, etc.

http://www.telecomreseller.com/2012/08/21/voice-security-attacks-call-jacking/