How often should the elevator system's emergency communication system be tested?

The emergency communication system in an elevator is critical for passenger safety. Testing it every month ensures that it functions properly and can effectively communicate in emergencies. This frequency is typically advised to ensure any potential issues can be identified and rectified promptly, minimizing the risk of failure when it is most needed. Regular monthly testing helps maintain compliance with safety regulations and standards, thereby providing peace of mind for both elevator users and maintenance personnel.

In contrast, testing it only once a year or every six months could allow for potential malfunctions to go unnoticed for extended periods, increasing safety risks. Testing only when malfunctioning is inadequate, as it relies on the system already being dysfunctional, which could lead to emergencies where communication is critical but untested.