AN EFFICIENT PACKETIZATION SCHEME FOR VOIP

A. Estepa, R. Estepa, J. Vozmediano

Abstract

A number of VoIP audio codecs generate Silence Insertion Descriptor (SID) frames during talk-gaps of conversations to update the comfort noise generator-parameters at the receiver. According to the RFC 3551 packetization scheme, discontinuously-generated SID frames can not be carried in the same IP packet, thus increasing the conversation’s bandwidth consumption.. We define a novel packetization scheme in which a set of non-consecutive SID frames may share the same packet, reducing the overhead while keeping the timing between them. We provide analytical expressions and experimental validation for the bandwidth savings obtained with this new scheme, which grows up to a 14% for the G.729B codec.

References

  1. Estepa, A., Estepa, R., and Vozmediano, J. (2003). Packetization and Silence Influence on VoIP Traffic Profiles.
  2. Zopf, R. (2002). Real-time Transport Protocol (RTP) payload for comfort noise (cn). RFC 3389, Internet Engineering Task Force.
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Paper Citation


in Harvard Style

Estepa A., Estepa R. and Vozmediano J. (2006). AN EFFICIENT PACKETIZATION SCHEME FOR VOIP . In Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006) ISBN 978-972-8865-64-1, pages 65-70. DOI: 10.5220/0001569300650070


in Bibtex Style

@conference{sigmap06,
author={A. Estepa and R. Estepa and J. Vozmediano},
title={AN EFFICIENT PACKETIZATION SCHEME FOR VOIP},
booktitle={Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006)},
year={2006},
pages={65-70},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001569300650070},
isbn={978-972-8865-64-1},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006)
TI - AN EFFICIENT PACKETIZATION SCHEME FOR VOIP
SN - 978-972-8865-64-1
AU - Estepa A.
AU - Estepa R.
AU - Vozmediano J.
PY - 2006
SP - 65
EP - 70
DO - 10.5220/0001569300650070