Virtual Dating... with SIP
Presented by...
SIPKnowledge, Inc. 
Motivation:
No matter what you say, the look does matter... How much time, money, energy and bad feelings could be saved by having a virtual pre-date over the video phone...? Let alone security!
Feature:
The two virtual daters can use their IP phones to first conduct a normal voice phone call. Then at their will they can choose (on-the-fly) to upgrade the call to a video call. The offerree may refuse to upgrade (while keeping the voice part of the call going) or may choose to accept the video upgrade, but only in a receiving mode (!) or may choose to fully accept the upgrade (i.e. both send and receive). In any case the voice part of the call is not impacted.
How this can be accomplished:
The following scheme illustrates how this can be accomplished.

SIPKnowledge, Inc. 
SIPKnowledge pursue research combined with actual product (and standard) work and provide its outcome in a shape of self paced eLearning courses, seminars (on-site training) and actual products. The courses and seminars offer information/self-training on SIP, IP telephony (VoIP) and 3G IMS. Products include:
- Consulting
- SIP/IMS training courses
1. SIP Illustrated - SIP eLearning course
2. 3G IMS Illustrated - 3G IMS eLearning course
- SIP developers aid tools
1. SIP RFC (3261) navigator and clarifier tool
http://www.sipcenter.com/goto/sipcenter-sipknowledge