The value of this object specifies the port-list used as match criterion for the destination port. The value specified for this object must correspond to a port-list defined in tQosPortListTable. If the value of this object is empty then the values of the objects tNetworkEgrIPCritDstPortValue1, tNetworkEgrIPCritDstPortValue2, and tNetworkEgrIPCritDstPortOperator are used as destination port match criterion. When this object is set to a non-empty value then the objects tNetworkEgrIPCritDstPortValue1, tNetworkEgrIPCritDstPortValue2, and tNetworkEgrIPCritDstPortOperator are reset to their default values by the system. Vice versa, when a new (non-default) value is provided for one of the objects tNetworkEgrIPCritDstPortValue1, tNetworkEgrIPCritDstPortValue2, or tNetworkEgrIPCritDstPortOperator then tNetworkEgrIPCritDstPortList is reset to its default (empty) value by the system. Setting any one of the objects tNetworkEgrIPCritDstPortValue1, tNetworkEgrIPCritDstPortValue2, tNetworkEgrIPCritDstPortOperator to a non-default value in combination with a non-default value for the object tNetworkEgrIPCritDstPortList is rejected by the system.