Poor VoIP call quality can be frustrating, especially during critical virtual meetings or sales pitches. To understand what's causing poor calls, it's essential to know how data is transferred on a VoIP call, including packetization, routing, and reassembly. Factors such as jitter, packet loss, latency, and network congestion can all contribute to subpar call quality. By identifying the root cause of the issue, businesses can take proactive steps to improve their VoIP calls, including monitoring call quality, increasing bandwidth, upgrading routers, setting up jitter buffers, configuring Quality of Service settings, segmenting traffic with VLANs, converting to ethernet connections, purchasing high-quality headsets, and switching off unnecessary Bluetooth devices. By implementing these strategies, businesses can ensure seamless and reliable VoIP calls that enhance their communication experience.