These techniques estimate failure rate means FITS for. The method you select determines the model (i.e., equation) used for calculating the failure rate of components (called devices) and blocks (called units). Recommended methods for predicting devices and hardware reliability units. The Bellcore/Telcordia standards provide three methods for performing reliability predictions: Method I, Method II and Method III. Calculations for standard deviation and upper confidence bounds are available in Issues 2 and 3 only. Telcordia SR-332 was the second electronic reliability prediction standard (after Mil-HDBK-217) and is still the second most popular of all current electronic reliability prediction standards. TR-332 Issue 6 (Bell Communications Research, 1997)Īll four versions are very similar, except for the updated base failure rates in the newer issues and other minor changes. SR-332 Issue 1 (Telcordia Technologies, 2001). SR-332 Issue 2 (Telcordia Technologies, 2006) SR-332 Issue 3 (Telcordia Technologies, 2011) Lambda Predict supports the following versions of the standard: The Bellcore/Telcordia standards provide reliability prediction models for electronic components in commercial applications. For general information about using the prediction folio for any type of standard (e.g., how to create folios, build system configurations, etc.), see Prediction Folios. This chapter focuses on the software features that apply specifically to using the Bellcore/Telcordia standards. Telcordia SR332 for Telecommunications System Broadband Subscriber Management System.
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