How does 3CX ensure high call quality?

3CX ensures high call quality primarily through the use of Quality of Service (QoS) settings. QoS is a network management technique that prioritizes certain types of traffic over others, enabling more reliable and clear audio during VoIP calls. By allocating sufficient bandwidth and minimizing latency for voice packets, 3CX can help ensure that calls remain crisp and uninterrupted, even in environments where network traffic may be high.

While limiting network traffic might help improve call quality indirectly by freeing up bandwidth, it does not specifically manage the traffic in a way that guarantees high call quality across varying conditions. Advanced call screening focuses on identifying and filtering calls, which does not affect the actual quality of the calls being made. Installing additional hardware might enhance capacity or the overall functioning of a system, but by itself does not ensure quality in terms of audio clarity and consistency during calls. Thus, the implementation of QoS settings is crucial for optimizing the performance of VoIP communications and ensuring high-quality calls.