Abstract
A method is developed to estimate call grade of service (GoS) and offered traffic for Voice over IP (VoIP) calls at a PSTN-IP network gateway. Since offered calls from the PSTN circuit-switched side may never reach a gateway due to blocking at gateway PSTN interfaces, it is not possible to measure directly at the gateway the GoS or the offered traffic. The proposed method is based on polling the gateway dial control MIB (RFC 2128) to derive the carried traffic and solving a fixed-point problem involving the Erlang-B formula to obtain the GoS and offered traffic. A monitoring system utilizing this method has been developed for a large IP telecom network. The system includes a web interface for generating graphical monitoring reports.
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.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2000 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Conway, A.E. (2000). Monitoring Application-Level VoIP Grade of Service at a PSTN-IP Network Gateway. In: Haverkort, B.R., Bohnenkamp, H.C., Smith, C.U. (eds) Computer Performance Evaluation.Modelling Techniques and Tools. TOOLS 2000. Lecture Notes in Computer Science, vol 1786. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-46429-8_35
Download citation
DOI: https://doi.org/10.1007/3-540-46429-8_35
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-67260-9
Online ISBN: 978-3-540-46429-7
eBook Packages: Springer Book Archive