DocumentCode :
1681209
Title :
On traffic characteristics and bandwidth requirements of voice over IP applications
Author :
Sharafeddine, Sanaa ; Riedl, Anton ; Glasmann, Josef ; Totzke, Jürgen
Author_Institution :
Inst. of Commun. Networks, Munich Technol. Univ., Germany
fYear :
2003
Firstpage :
1324
Abstract :
Voice over IP (VoIP) services will play an important role in future IP networks, promising cost savings and new revenue sources to operators and service providers. To provide quality of service guarantees, certain mechanisms need to be implemented which support predictable packet handling, bandwidth allocation, and call admission control. In order to configure these mechanisms, a solid understanding of VoIP traffic characteristics and its respective bandwidth requirements is necessary. In this paper, we characterize traffic traces generated by various VoIP applications. According to the H.323 standard, the characteristics are described by means of token bucket parameters, which are then used to derive the required service rates for individual traffic flows. While in most cases sources send out fairly steady packet streams, there are situations where software based clients emit rather bursty traffic resulting in unreasonably high bandwidth needs. On basis of these traffic flows, we investigate the effects that token bucket parameters have on the bandwidth demand and discuss tradeoff possibilities in order to reduce it.
Keywords :
Internet telephony; bandwidth allocation; quality of service; telecommunication congestion control; telecommunication traffic; H.323 standard; bandwidth allocation; bandwidth requirements; call admission control; future IP networks; individual traffic flows; packet handling; quality of service guarantees; token bucket parameters; traffic characteristics; voice over IP applications; Bandwidth; Call admission control; Channel allocation; Communication system traffic control; Costs; IP networks; Internet telephony; Quality of service; Solids; Telecommunication traffic;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computers and Communication, 2003. (ISCC 2003). Proceedings. Eighth IEEE International Symposium on
ISSN :
1530-1346
Print_ISBN :
0-7695-1961-X
Type :
conf
DOI :
10.1109/ISCC.2003.1214297
Filename :
1214297
Link To Document :
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