TA NWT 000820 : ISSUE 1

Presents Bellcore's preliminary view of proposed generic functional criteria necessary for Network Elements (NEs) to support surveillance of digital transmission entities, such as lines and paths. It specifically covers DS1 and DS3 transmission technologies and focuses on surveillance criteria, e.g., performance primitives, needed for detecting transmission degradations/failures and collecting associated performance data. This TA emphasizes performance monitoring, rather than alarm/status monitoring and also addresses failure monitoring and performance monitoring during failures