Defines the behaviors supported by objects which encapsulate constraints used by the proxy objects associated with an event channel in order to determine which events they receive will be forwarded, and which will be discarded.
Each object supporting the Filter can encapsulate a sequence of any number of constraints. Each event received by a proxy object which has one or more objects supporting the Filter interface associated with it must satisfy at least one of the constraints associated with one of its associated Filter objects in order to be forwarded (either to another proxy object or to the consumer, depending on the type of proxy the filter is associated with), otherwise it will be discarded.

MTOSI Specific Documentation
This class is applicable to MTOSI. The specific operations and relationships that apply to MTOSI are listed in SD2-11. 
For MTOSI, references to "NMS" can be interpreted as "Requesting OS" and references to "EMS" can be interpreted as "Target OS", i.e., the OS that fulfills requests from another OS. 
The statements concerning Object Lifecycle, i.e., whether the object can be created by the NMS or EMS, are not particularly meaningful for MTOSI, since MTOSI does not define management systems with fixed roles such as the NMS and EMS entities in MTNM.

Object Lifecycle: Created and deleted by NMS

Object Creation Notification Issued? No
Object Deletion Notification Issued? No
