A method of and system for managing telecommunications system testing. The system displays a list of available originating and terminating bulk call generators. The user can graphically select the bulk call generators to be used in the test and can communicate with selected bulk call generators through the interface. The system also displays a list of available test case scripts. The system enables the user to formulate a mix of scripts to be executed by displaying a control for each selected test case script. The system further enables a user to designate different mixes of scripts for selected time periods over a test run. The system then assigns each script to a call program and a group of call programs to a set. The system then starts the set at the user predefined time. The system the stops the set and resets each call program and set based on the previously chosen call mixes.