What is generally a required action if latency exceeds acceptable levels in a VoIP setup?

In a Voice over Internet Protocol (VoIP) setup, implementing Quality of Service (QoS) measures is crucial when latency exceeds acceptable levels. QoS is a set of technologies and techniques used to manage network resources by prioritizing certain types of traffic. Since VoIP requires timely and consistent delivery of voice packets to ensure clear conversations without significant delay, it benefits greatly from QoS.

When latency is high, real-time voice data packets may arrive out of order or become delayed, leading to poor call quality or dropped calls. By establishing QoS protocols, network administrators can prioritize VoIP traffic ahead of less time-sensitive data, such as file downloads or email, thereby reducing lag and improving the overall experience.

Using QoS helps to manage bandwidth effectively, ensuring that latency levels remain acceptable for VoIP. This action directly addresses the core issue of latency in a VoIP setup, making it the most appropriate course of action when faced with this challenge.