Peer-to-peer communication across network address translators
ATEC '05 Proceedings of the annual conference on USENIX Annual Technical Conference
RouteBricks: exploiting parallelism to scale software routers
Proceedings of the ACM SIGOPS 22nd symposium on Operating systems principles
Greening the internet with nano data centers
Proceedings of the 5th international conference on Emerging networking experiments and technologies
Hot data centers vs. cool peers
HotPower'08 Proceedings of the 2008 conference on Power aware computing and systems
The impact of TLS on SIP server performance
Principles, Systems and Applications of IP Telecommunications
The energy and emergy of the internet
Proceedings of the 10th ACM Workshop on Hot Topics in Networks
A Survey of Green Mobile Networks: Opportunities and Challenges
Mobile Networks and Applications
Hi-index | 0.00 |
With constantly increasing costs of energy, we ask ourselves what we can say about the energy efficiency of existing VoIP systems. To answer that question, we gather information about the existing client-server and peer-to-peer VoIP systems, build energy models for these systems, and evaluate their power consumption and relative energy efficiency through analysis and a series of experiments. Contrary to the recent work on energy efficiency of peer-to-peer systems, we find that even with efficient peers a peer-to-peer architecture can be less energy efficient than a client-server architecture. We also find that the presence of NATs in the network is a major obstacle in building energy efficient VoIP systems. We then provide a number of recommendations for making VoIP systems more energy efficient.