참고문헌
- Gartner Group [Internet]. Available: http://www.gartner.com/
- VoIP [Internet]. Available: http://en.wikipedia.org/wiki/Voice_over_IP
- Mobile VoIP [Internet]. Available: http://en.wikipedia.org/wiki/Mobile_VoIP
- Asterisk [Internet]. Available: http://www.asterisk.org/
- MOS(Mean Opinion Score) [Internet]. Available: http://en.wikipedia.org/wiki/Mean_opinion_score
- PSQM(Perceptual Speech Quality Measurement)[Internet]. Available: http://en.wikipedia.org/wiki/Perceptual_Speech_Quality_Measure
- ITU G.114 [Internet]. Available: http://en.wikipedia.org/wiki/G.114,
- Matthew Ruck, "Top Ten Security Issues with Voice over IP," 2010 White Paper Series [Internet]. Available: http://www.designdata.com
- D. Richard Kuhn, Thomas J. Walsh, and Steffen Fries, "Security Considerations for Voice Over IP Systems," NIST Special Publication 800-58, January 2005.
- ByungRae Cha, Franz I.S. Ko, "An OTP(One Time Password) Generation Method Using the Features of Fingerprint," Journal of Society for e-Business Studies, Feb. 2008.
- ByungRae Cha, "An OTP(One Time Password) Key Generation Method and Simulation using Homomorphic Graph by the Fingerprint Features," Journal of KIPS Vol. 15-C, No. 6, Dec. 2008.. https://doi.org/10.3745/KIPSTC.2008.15-C.6.447
- ByungRae Cha, Franz I.S. Ko, "Novel OTP System Design using homomorphic graph of Fingerprints," IETE Technical Review, July 2009.
- ByungRae Cha, NamHo Kim, JongWon Kim, "Design of OTP based on Mobile Device using Voice Characteristic Parameter," Journal of KONI, Aug. 2010.
- ByungRae Cha, NamHo Kim, JongWon Kim, "Availability Verification of Integration OTP Framework using Biometrics Information," Journal of KONI, Feb. 2011.
- XenServer [Internet]. Available: http://xenserver.org/
- FFT(Fast Fourier Transformation) [Internet]. Available: http://en.wikipedia.org/wiki/Fft
- Matlab [Internet]. Available: http://www.mathworks.co.kr/