A vortex flowmeter has a flow conditioning structure entirely inside a flow tube and an externally mounted pair of ultrasonic transducers for detecting vortices generated by vortex shedding structures within the flow tube. These N interface devices are useful for connecting an N-port device under test to the VNA. The decision-maker makes decisions to create an optimized treatment program for treating the combination of identified laundry items placed into the machine. Once the source of the particular micro-operation has been renamed, subsequent micro-operations in the sequence may be renamed, if appropriate, and executed, without having to wait for the values to be calculated. The testing program captures the media player’s display buffer after the execution of each command. A sub-set of Customer-facing ports of each Aggregation Switch are coupled to the VFL and assigned to the IPC VLAN to enable communication therebetween.