Video Telephony

I am interested in Video Telephony on Windows Mobile.
Actually I am not an expert in this field.
As a part lead, I would like to get a general idea about VT.
So I decided to collect material on the internet.
Here are the links I found on that journey.
I focused on CSVT (Circuit Switch based Video Telephony) that is a standard for 3G networks.
Europe, Japan and Korea support this.

Understanding the 3G-324M Spec: Part 1
http://www.commsdesign.com/design_corner/OEG20030121S0009

Understanding the 3G-324M Spec: Part 2
http://www.commsdesign.com/design_corner/OEG20030128S0010

3G-324M: Delivering conversational multimedia to 3G handsets
http://telephonyonline.com/ar/telecom_gm_delivering_conversational/

Wikipedia: 3G-324M
http://en.wikipedia.org/wiki/3G-324M

Smooth Integration of Mobile Video Telephony to Windows Mobile Smartphones
http://www.smartphonemag.com/cms/_archives/oct06/mobilevideo.aspx