1. G.107: The E-Model a computational model for use in transmission planning. https://www.itu.int/rec/T-REC-G.107-201506-I/en. G.107: The E-Model a computational model for use in transmission planning. https://www.itu.int/rec/T-REC-G.107-201506-I/en.
2. G.114: ITU Recommendation of One-way Transmission Time. https://www.itu.int/rec/T-REC-G.114/en. G.114: ITU Recommendation of One-way Transmission Time. https://www.itu.int/rec/T-REC-G.114/en.
3. Microsoft: Skype runs on Windows Azure; SkyDrive up next. http://www.zdnet.com/article/ microsoft-skype-runs-on-windows-azure-skydrive-up-next/. Microsoft: Skype runs on Windows Azure; SkyDrive up next. http://www.zdnet.com/article/ microsoft-skype-runs-on-windows-azure-skydrive-up-next/.
4. Quality of Service for Voice over IP. http://www.cisco.com/c/en/us/td/docs/ios/solutions_docs/ qos_solutions/QoSVoIP/QoSVoIP.pdf. Quality of Service for Voice over IP. http://www.cisco.com/c/en/us/td/docs/ios/solutions_docs/ qos_solutions/QoSVoIP/QoSVoIP.pdf.
5. Skype’s Incredible Rise in One Image. http://blogs.wsj.com/ digits/2014/01/15/skypes-incredible-rise-in-one-image/. Skype’s Incredible Rise in One Image. http://blogs.wsj.com/ digits/2014/01/15/skypes-incredible-rise-in-one-image/.