SERVICE LEVEL AGREEMENTS BASED ON OBJECTIVE VOICE QUALITY TESTING FOR VOICE OVER IP (VOIP) NETWORKS

摘要

An objective, service-level specific voice call listening quality test schemefor a Voice Over IP (VOIP)network is presented. Test probes are deployed alongthe border of the VOIP network. Each test probe is capable of placing callsover the VOIP network to the other test probes at different levels of serviceand measuring call quality using an objective measurement algorithm such asPAMS or PSQM. The measurement results are collected on an ongoing basis toobtain information on the VOIP network's voice call quality. The informationis compared to thresholds to measure performance against Service LevelAgreement guarantees.