VoIP is clearly a growing technology. However, VoIP does not have toll
grade voice quality because of the non-deterministic nature of Internet
traffic. Arjona, et al. (2008) evaluates VoIP performance in current
implementations of 3G Internet protocols. The results are predictable:
VoIP suffers in varying degrees in all the systems. Analyze and discuss,
not how you might change the Internet protocols, but instead analyze
and discuss what changes might be made to the VoIP protocol itself to
improve performance in an Internet transmission environment.