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ATIS 0100020.2008 [pre-pub]
- Quantifying the Impact on IP Service from Network Element Outages
- standard by Alliance for Telecommunication Industry Solutions, 10/01/2008
- Publisher: ATIS
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Defines a metric that can gauge an IP network to deliver transaction services in an acceptable manner. Transactions such as Voice over IP calls are either successfully completed as required; otherwise, they are considered to be ¿defects¿. The DPM metric is defined as the ratio of all defective transactions to the total number of transactions attempted over a pre-determined period normalized, but a factor of one million.