Analysis of the delay and jitter of voice traffic over the Internet

Author

Karam, Mansour J. ; Tobagi, Fouad A.

Author_Institution

Speedtrak Commun., San Mateo, CA, USA

Volume

2

fYear

2001

fDate

2001

Firstpage

824

Abstract

In the future, voice communication is expected to migrate from the public switched telephone network (PSTN) to the Internet. Because of the particular characteristics (low volume and burstiness) and stringent delay and loss requirements of voice traffic, it is important to separate voice traffic from other traffic in the network by providing it with a separate queue. In this study, we conduct a thorough assessment of voice delay in this context. We conclude that priority queuing is the most appropriate scheduling scheme for the handling of voice traffic, while preemption of non-voice packets is strongly recommended for sub-10 Mbit/s links. We also find that per-connection custom packetization is in most cases futile, i.e. one packet size allows a good compromise between an adequate end-to-end delay and an efficient bandwidth utilization for voice traffic

Keywords

Internet telephony; delays; jitter; packet switching; queueing theory; telecommunication traffic; voice communication; Internet; PSTN; delay analysis; delay requirements; efficient bandwidth utilization; end-to-end delay; jitter analysis; loss requirements; packet size; per-connection custom packetization; priority queuing; public switched telephone network; scheduling scheme; voice communication; voice delay; voice traffic; Communication switching; Communication system traffic control; Delay; IP networks; Internet telephony; Jitter; Speech analysis; Switches; Telecommunication traffic; Traffic control;

fLanguage

English

Publisher

ieee

Conference_Titel

INFOCOM 2001. Twentieth Annual Joint Conference of the IEEE Computer and Communications Societies. Proceedings. IEEE

Conference_Location

Anchorage, AK

ISSN

0743-166X

Print_ISBN

0-7803-7016-3

Type

conf

DOI

10.1109/INFCOM.2001.916273

Filename

916273