Recently we installed ptp550(400 meter distance, RSSI - 35dbm from Ap, -23dbm from SM, Modulation 8~9 from both end most of the time).
We tested with iPerf following instruction from cambium community (http://community.cambiumnetworks.com/t5/PTP-FAQ/PTP-550-Load-Balancing-and-Throughput-Testing/m-p/91739). Bandwidth test result was stable 400/400 mbps bi directional. One directional test (iperf) was 500/500~600(same as device GUI) . Now client want to test it with their networks. They want to test File server>client (3/4 laptop) to achieve same performance. For this how we setup our test environment for this? We tried file transfer between 2 laptops on each side. We got nearly 40% of Iperf test.
If we can achieve at least 80% of iperf result via file transfer they will accept it.