pdhCurrentDataNearEndPackage — ETSI published formal attachments
Instances of the pdhCurrentDataNearEnd managed object class are used to hold the current near end register counts for a PDH path during a collection period. The following performance primitives are observed: Defect Seconds (pN_DS) and Errored Blocks (nN_B). These primitives are provided by monitoring functions represented in superior PDH termination points and are defined in PDH path layers according EN 300 417-5-1 [10] . For these performance primitives the following performance events are defined: BBE Background Block Error. ES Errored Second. SES Severely Errored Second. UAS Unavailable Second: This counter is used to store one second intervals pertaining to an unavailable time period at the near end. In addition, the optional performance event CSES (Consecutive SES) is defined. This managed object class uses the pdhPathHistoryDataNearEnd managed object class for history retention. A QOS alarm shall be sent as soon as a threshold is reached or crossed. At the end of the granularity period the QOS alarm is implicitly cleared and, providing there are no other outstanding threshold crossing QOS alarms, thresholdCrossing is removed from the currentProblemList (i.e. no notification is sent). A new QOS alarm shall be sent if the threshold is reached or crossed again during the next granularity period. Only one threshold value per performance counter will be supported.