The NetSim Standard version allows up to 500 UEs to be connected to eNodeBs in an LTE network.

To create a large scenario involving a higher number of UEs connecting to an eNodeB, the Rapid Configurator option can be used. For more details on creating large networks, refer to Section 3.9: Rapid Configurator in the User Manual.

https://tetcos.com/downloads/v14.4/NetSim_User_Manual.pdf