Service Level Agreements (SLAs) form the heart of every business relation between service users and service providers. Their contents feed the network management systems as well as operation support and business support systems and may vary widely depending on the type of service provided. Therefore, a general mechanism to assess their fulfillment is extremely helpful for both contract partners, but by no means easy to be realized. This paper proposes the Cumulus Assessment Module (CAM) as an efficient general solution for this problem. After introducing its fundamental statistical functionality based on Wald's Sequential Probability Ratio Test, we describe how CAM fits into a general management architecture and define its abstract interfaces.
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