Poor VoIP call quality can be due to several factors including network congestion, low bandwidth, packet loss, jitter, or hardware issues.

Improving the sound quality of VoIP calls can be achieved by ensuring a stable internet connection, using high-quality audio devices, and configuring your VoIP settings correctly.

Yes, your internet connection can significantly affect your VoIP audio quality. A stable and high-speed connection is necessary for clear VoIP calls.

Using a headset can indeed improve your VoIP call quality. Headsets can reduce background noise and prevent feedback between speakers and the microphone.

'Jitter' in VoIP is the variation in delay of received packets. High jitter can cause choppy audio or temporary freezes. Using a wired connection, upgrading your internet plan, or using a jitter buffer can help reduce this issue.

Yes, if you're using a Wi-Fi connection for your VoIP calls, the distance from your router can affect call quality. Closer proximity to the router generally provides a stronger and more stable connection.

Echo in VoIP calls can be caused by latency or feedback from the speakers into the microphone. Using a headset instead of speakers can often resolve this issue.

Static during VoIP calls could result from problems with your hardware, such as your microphone, speakers, or headset. Try testing with different devices to see if the problem persists.

Packet loss refers to data being lost during transmission. In VoIP calls, this can lead to missing pieces of conversation and reduced call quality. This is often caused by network congestion.

Delays or lags during VoIP calls, also known as latency, can be caused by network issues. Upgrading your internet plan or optimizing your network settings can help reduce latency.

Sudden drops in VoIP calls can be due to unstable internet connections or network congestion. It could also be a result of insufficient bandwidth if multiple devices are using the network simultaneously.

VoIP systems often include noise suppression techniques to minimize background noise. However, the effectiveness can vary. Using a high-quality headset with noise-canceling features can further help to reduce background noise.