What is SIP?
Here is a short definition of SIP
Great article on "Voice of reason – Top Ten tips for VoIP"
As an Access Strategy specialist, C&C Technology, appreciates the ability to communicate effectively is critical to the success of introducing flexible working practices.
Using VoIP to make free phone calls over your iPhone
Great article on how to use Skype and your iPhone to make free phone calls on your iPhone. It does invalidate your iPhone warranty, but if you've already done that, why not take advatage of this:
A great resource on up and coming VoIP news and events
Exciting and ground-breaking news about the world of VoIP
About Real Time Transfer Protocol (RTP)
RTP solves the problem enabling the receiver to put the packets back into the correct order
Analog to Digital Conversion
In the VoIP world, this is done with hardware. For example, using a card integrated ADC.