Abstract: A system and a method for testing at least one device in a communications network based on an IP-standard (internet protocol standard), in the loaded state and/or for a plurality of users. The system and method may test the load state of the IP-based networks in a semi-automated fashion. Such a system and method may include at least one programmable control device having an assigned memory device, in which a plurality of session scripts is able to be stored, which each contain a predefined test procedure, and at least one session computer connected to the control device and has a plurality of mutually independent connection interfaces for executing at least one session script. Via each connection interface, an independent IP connection to the communications network may be established.