A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL. The file type is application/pdf.
application/pdf
Ying-Dar Lin, Chien-Chao Tseng, Cheng-Yuan Ho, Yu-Hsien Wu. "How NAT-compatible are VoIP applications?." IEEE Communications Magazine 48.12 (2010) 58-65