Sure! Here is an SEO-friendly HTML answer for the interview question on VoIP network call quality:

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Common Factors Affecting Call Quality in VoIP Networks

VoIP call quality can be influenced by various factors, including:

• Network Congestion
• Jitter and Latency
• Packet Loss
• Bandwidth Limitations
• Hardware and Software Issues

To mitigate these issues and improve call quality, consider the following solutions:

1. Implement Quality of Service (QoS) policies
2. Optimize network bandwidth
3. Use reliable networking equipment
4. Regularly monitor and troubleshoot network performance

By addressing these common factors and implementing proper solutions, you can enhance the overall call quality in your VoIP network.

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In this HTML code, the focus keyword "VoIP call quality" is strategically included in the title tag, meta description tag, heading, and throughout the answer content to optimize it for search engine visibility in relation to the interview question.