Title :
A new approach for VoIP traffic characterization
Author :
Estepa, A. ; Estepa, R. ; Vozmediano, J.
Author_Institution :
Dept. of Ingenier a de Sistemas y Automaetica, Univ. of Sevilla, Seville, Spain
Abstract :
The letter proposes a new frame generation model for those audio codecs which handle SID frames and deduces an analytical expression for the mean bit rate at the input of the IP network as a function of the number of frames per packet. The new model is experimentally validated for the G.729B, G.723.1, and GSM AMR codecs. Results show that the error of the estimation of the mean bit rate can be reduced significantly compared to the traditional on-off model.
Keywords :
IP networks; Internet telephony; audio coding; parameter estimation; speech codecs; telecommunication traffic; G.723.1 codec; G.729B codec; GSM AMR codec; GSM adaptive multirate codec; IP network; VoIP traffic characterization; audio codecs; frame generation model; mean bit rate; mean bit rate estimation error; voice over IP; Background noise; Bit rate; Codecs; Estimation error; GSM; Helium; IP networks; Internet telephony; Telecommunication traffic; Traffic control; Audio codecs; IP telephony; VoIP; voice communications; voice over IP; voice traffic modeling;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2004.835318
