Assessing voice quality in packet-based telephony

J. Janssen, D. De Vleeschauwer, M. Buchli, G.H. Petit
2002 IEEE Internet Computing  
Delay, echo, codec type, and packet loss all come into play in achieving the quality of PSTN calls in packet-based telephony.
doi:10.1109/mic.2002.1003131 fatcat:aqu4vmbuzjdqdaabekdhp4a5le