The 10/100/1000 Aggregator nTAP efficiently copies full-duplex traffic and aggregates the traffic into a single stream to any analysis or security device with a single-receive capture interface. 
Product Details...

The 10/100/1000 Copper nTAP includes a connection to either side of the full-duplex link under test and a standard full-duplex analyzer connection. All copper nTAPs replicate the full-duplex signal from the network, sending one signal back to the network 
Product Details...