Independent relays in overlays for reliable enterprise IP telephony

B. Karacali, M. Karol, P. Krishnan, K. Kumar, J. Meloche

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Network QoS degradation can significantly impair the ability of networks to satisfy the stringent requirements of real-time applications such as IP Telephony. Recently, we proposed a simple and practical overlay technique called ORBIT (Overlays providing Reliability for Better IP Telephony) that uses intelligent endpoints and independent relays. In the ORBIT architecture, the endpoints rapidly detect network QoS degradation and find better "single-hop" alternate paths (i.e., paths that traverse at most one relay). One key issue for ORBIT and single-hop overlays in general is how many relays to deploy and where to place these relays in the network for adequate protection against QoS problems. In this paper, we concentrate on enterprise networks and evaluate the benefits of random placement of relays. Our simulation study indicates that a small number of relays with respect to the network size is sufficient to achieve a high level of protection.

Original languageEnglish
Title of host publication2006 IEEE Sarnoff Symposium
DOIs
StatePublished - 2006
Event2006 IEEE Sarnoff Symposium - Princeton, NJ, United States
Duration: 27 Mar 200628 Mar 2006

Publication series

Name2006 IEEE Sarnoff Symposium

Conference

Conference2006 IEEE Sarnoff Symposium
Country/TerritoryUnited States
CityPrinceton, NJ
Period27/03/0628/03/06

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