Although now a mainstream technology, managing VoIP remains a challenge for even the most seasoned IT pro. The application’s sensitivity to packet loss and delay and users intolerance for anything less than audio perfection can create a troubleshooting nightmare.
1. Understand and measure call quality
There are a variety of metrics and variables you can use to assess VoIP call quality, including jitter, MOS, R-Factor, gap density, burst density, Quality of Service prioritization, and compression techniques. Ensure accurately analysis by learning how to measure these attributes.
2. Make QoS a priority
Incorrectly set QoS precedence for VoIP traffic leads to delays in packet delivery and reduced call quality.
3. Deploy analysis tools strategically
Placing analysis consoles and probes on your network requires a clear understanding of VoIP traffic patterns. Are you concerned with monitoring VoIP traffic locally, over WAN links, or both? Depending on your objectives, place your analysis tools to ensure optimal visibility of VoIP communications. Learn more.
4. Compare jitter to overall bandwidth utilization
When jitter becomes a problem, look at the big picture. A correlation between jitter and bandwidth usage means the problem is overall network usage. If there is no direct correlation, excessive jitter might be caused by isolated network factors that require further investigation.
5. Proactively monitor VoIP activity
Utilize monitoring and notification tools to speed problem resolution. Determine “normal” or “acceptable” levels of activity for your network and its users. Then set up thresholds within your analyzer to alert you when performance degrades.
6. Baseline network traffic
To truly understand VoIP traffic, capture and store long-term network data. Only with critical trending data can you accurately perform baselining activities. Baselining validates VoIP performance, helps future capacity planning efforts, and provides long-term understanding of VoIP health.
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