The value of this object specifies the port-list used as match criterion for the source 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 tNetworkEgrIPCritSrcPortValue1, tNetworkEgrIPCritSrcPortValue2, and tNetworkEgrIPCritSrcPortOperator are used as source port match criterion. When this object is set to a non-empty value then the objects tNetworkEgrIPCritSrcPortValue1, tNetworkEgrIPCritSrcPortValue2, and tNetworkEgrIPCritSrcPortOperator are reset to their default values by the system. Vice versa, when a new (non-default) value is provided for one of the objects tNetworkEgrIPCritSrcPortValue1, tNetworkEgrIPCritSrcPortValue2, tNetworkEgrIPCritSrcPortOperator then tNetworkEgrIPCritSrcPortList is reset to its default (empty) value by the system. Setting any one of the objects tNetworkEgrIPCritSrcPortValue1, tNetworkEgrIPCritSrcPortValue2, or tNetworkEgrIPCritSrcPortOperator to a non-default value in combination with a non-default value for the object tNetworkEgrIPCritSrcPortList is rejected by the system.