Once an eNB product has passed the functional and performance testing in the wrap-around configuration, the last step is the system load testing. This is an effective tool to determine the final quality, and it has been used as an acceptance test by many LTE service operators. Artiza offers by far the highest level of LTE network system testing with Massive UE Simulation achieving the phenomenal capacity, 840 UEs per sector (5,060 UEs over 6 sectors) as shown in Figure 1. In order to perform LTE network system testing, Artiza Massive UE simulator supports not only simple NAS layer simulation but also with more complex handover scenarios. In addition, Application Layer Test features are also supported. Artiza Massive UE simulator allows scripting to communicate with legacy IP testers to perform evaluation with voice, data, and video.