Abstract
The perceived quality of a VoIP call depends both on terminal and network performance. A proper selection of the terminal working parameters, such as codec or packetization, may reduce the QoS requirements imposed on the network to grant the expected end-to-end quality.
This paper introduces an application-level QoS management model to provide user-selected end-to-end call quality with optimal transport resource usage. The model adapts the QoS entities and interfaces defined by the ETSI TIPHON QoS Management Reference Architecture to H.323 networks, integrating call and QoS signalling. It is further enhanced by defining a resource optimization policy and a signalling procedure.
As a result, the IP Telephony Service Provider can fullfill the user’s expectations at the best cost/performance tradeoff.
The work leading to this article has been partly supported by CICYT and the EU under contract number 1FD97-1003-C03-03.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
ITU-T Recommendation P.800 (1996-08) Methods for subjective determination of transmission quality
Braden, R., Clark, D., Shenker, S.: Integrated Services in the Internet architecture: an Overview. RFC 1633. See also the IETF “Integrated Services” Working Group, http://www.ietf.org/html-charters/intserv-charter.html
Blake, S., Black, D., Carlson, M., Davis, E., Wang, Z., Weiss, W.: An architecture for differentiated services, RFC 2475
ETSI ETR 250 (1996-07). Speech communication quality from mouth to ear for 3,1 kHz handset telephony across networks
ITU-T Recommendation G.107 (2000-05). The E-Model, a computational model for transmission planning
ETSI TS 101 329-3 v2.1.2 (2002-01). Signalling and control of end to end Quality of Service (QoS)
ITU-T Recommendation H.323 Draft v4 (2000-11). Packet-based multimedia communications systems
ITU-T Recommendation H.225.0 (2001-03). Call signalling protocols and media stream packetization for packet-based multimedia communication systems
ITU-T Recommendation H.245 (2000). Control protocol for multimedia communication
ITU-T Recommendation G.113, Appendix I. Provisional planning values for the equipment impairment factor Ie
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2003 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Estepa, R., Estepa, A., Rivero, R., Vozmediano, J.M. (2003). Optimal On-Demand VoIP Quality in an H.323 Network. In: Freire, M.M., Lorenz, P., Lee, M.MO. (eds) High-Speed Networks and Multimedia Communications. HSNMC 2003. Lecture Notes in Computer Science, vol 2720. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-45076-4_51
Download citation
DOI: https://doi.org/10.1007/978-3-540-45076-4_51
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-40542-9
Online ISBN: 978-3-540-45076-4
eBook Packages: Springer Book Archive