Abstract: A telecommunications system testing arrangement is disclosed that verifies the operation of a large distributed system of endpoints. This test system simulates actual real-time user actions on a live system that is under test. The disclosed system may improve the testing process by (1) using the actual endpoints themselves to generate traffic/actions, and (2) monitoring the system response. The disclosed system may also be configured to automatically encode test scripts based on user actions on a endpoint device, and/or to convert specific information into variables. These variables may facilitate cross platform use of the test script.