ePDHCTPSinkR1Pkg — ETSI published formal attachments
This object class represents the termination of a PDH connection and models the adaptation sink function in different PDH path layers represented by subclasses of this class. An instance of this object class shall be used when, in one layer, flexibility is available or when there is no termination of a client characteristic information (Pnx-CI). The attribute framedSignalMode may have the values 'active' and 'inactive'. An attributeValueChange notification is issued when the value is modified and the inherited conditional package attributeValueChangeNotificationPackage is instantiated. If the value is set 'active', then the adaptation processing of a framed signal is provisioned and the detection of the defects LOF and AIS is enabled. A communicationsAlarm notification shall be issued if an AIS is detected. The probableCause parameter of the notification shall indicate aIS [3]. A communicationsAlarm notification shall be issued if an LOF is detected. The probableCause parameter of the notification shall indicate lossOfFrame [3]. In case of defect detection the consequent action aSSF (all-ONES) is performed. If the value is set 'inactive', then this adaptation function is deactivated assuming the reception of an unframed signal (characteristic information Pnx_CI). An attributeValueChange notification is issued when the value of the attribute frameStatus is changed and the inherited conditional package attributeValueChangeNotificationPackage is instantiated. The operational state is disabled if a failure of the equipment affecting an instance of this class prevents the resource from operation. If the attribute alarmSeverityProfilePointer points to an instance of the MOC alarmSeverityAssignmentProfile then the perceivedSeverity associated with the probableCause in the communicationsAlarm is determined by the assignment given in the attribute alarmSeverityAssignmentList of that instance. The value 'non-alarmed' of the severity assigned to a problem inhibits the emission of the potential communicationsAlarm notification of that problem. This behaviour meets the ability to configure the defect correlation filter not to report selected fault causes (i.e. problems) and hence no associated failures will be alerted by communicationsAlarm notifications. The alarmSeverityProfilePointer may point to an instance of alarmSeverityAssignmentProfile which is auto-created by the NE according the name-binding label 'defaultNMONAlarmSeverityAssignment-managedElement'. This relationship of the termination point reflects the NMON state during which no communicationsAlarm is reported at all. When the severity changes to a value 'non-alarmed' for a problem which has been notified by an instance of this class then a communicationsAlarm notification with the perceivedSeverity 'cleared' is issued and the corresponding entry in the attributes currentProblemList and alarmStatus is removed. When the severity changes from 'non-alarmed' to a value other than 'non-alarmed' then a pending, persistent defect will be notified. If the alarm severity cannot be assigned by the way of an alarmSeverityAssignmentProfile object (e.g. the attribute alarmSeverityProfilePointer has the value NULL or no assignment is given in the attribute alarmSeverityAssignmentList) then one of the two choices applies when reporting alarms: a) agent assigns the severity, b) the value 'indeterminate' is used.