: Combines Method I generic data with laboratory test data conducted under SR-332 specified criteria.
A generic Bill of Materials (BOM), component types, and the intended operating environment. How it works: It uses generic base failure rates ( λblambda sub b ) multiplied by a quality factor ( QQcap Q sub cap Q ) and an environmental factor ( QEcap Q sub cap E ). It assumes nominal electrical and thermal stress levels. Method II: Combining Parts Count with Field Data telcordia sr-332 issue 3 pdf