Which one of the following phases of a control project do the AV installers and the control system designers coordinate to test the functionality of the AV system, both hardware and software?

The commissioning phase of a control project is where AV installers and control system designers come together to test the functionality of the audio-visual system, encompassing both hardware and software components. During this phase, thorough testing is conducted to ensure that all elements of the system are functioning as intended and that they meet the specified design requirements.

This involves not only verifying that the equipment is installed correctly but also checking that the control software integrates seamlessly with the hardware. Any issues identified during this process can be addressed before the system is handed over for operational use. This collaborative effort ensures that the system delivers optimal performance and meets the user's needs.

In contrast, other phases such as design focus on planning and initial conceptualization, implementation revolves around the actual installation of equipment, and inspection generally pertains to the review of the physical setup rather than the comprehensive functionality testing that occurs during commissioning.