Improve VoIP Call Quality
VoIP Call Quality depends on your internet connection, network configuration, hardware, and software. This guide explains how to improve VoIP Call Quality by optimizing your network, choosing the right devices, and troubleshooting common audio issues when using DialNext.
Minimum Network Requirements for VoIP Call Quality
For the best calling experience, your internet connection should meet the following recommendations.
| Requirement | Recommended |
|---|---|
| Download Speed | At least 100 Kbps per active call |
| Upload Speed | At least 100 Kbps per active call |
| Latency | Less than 150 ms |
| Jitter | Less than 30 ms |
| Packet Loss | Less than 1% |
If multiple users share the same internet connection, ensure enough bandwidth is available for all simultaneous calls.
Meeting these recommendations helps maintain excellent VoIP Call Quality, even during periods of heavy network usage.
Recommended Network Configuration for VoIP Call Quality
A properly configured network significantly improves call stability and audio clarity.
We recommend:
- Use a wired Ethernet connection whenever possible.
- Avoid public or unstable Wi-Fi networks.
- Enable Quality of Service (QoS) on your router to prioritize voice traffic.
- Keep your router firmware updated.
- Minimize heavy network activity during calls, such as video streaming or large downloads.
- Connect your computer directly to your router whenever possible instead of using Wi-Fi extenders.
Improve VoIP Call Quality with the Right Devices
Using professional communication devices improves audio quality and reduces background noise.
Recommended Headsets
- Jabra Evolve2 65
- Jabra Evolve2 75
- Poly Blackwire 5220
- Poly Voyager Focus UC
- Logitech Zone Wireless
- EPOS IMPACT 860
Recommended Speakerphones
- Jabra Speak2 55
- Jabra Speak2 75
- Poly Sync 20
- Poly Sync 40
For the best experience, avoid using built-in laptop microphones for business calls.
Keep Your Browser or Desktop App Updated
Keeping your browser or DialNext application updated helps deliver the latest performance improvements and security updates.
We recommend:
- Update your web browser regularly.
- Install the latest version of the DialNext desktop application.
- Restart your browser or application after installing updates.
Supported browsers include:
- Google Chrome
- Microsoft Edge
- Mozilla Firefox
- Safari
How to Test Your VoIP Call Quality
Before making important business calls, test your network performance.
Check the following:
- Download speed
- Upload speed
- Latency (Ping)
- Jitter
- Packet loss
Use a reliable internet speed testing service to verify your network performance.
If your network does not meet the recommended values, improve your connection before placing business calls.
Optimize Your Workspace
Small changes to your work environment can noticeably improve call quality.
We recommend:
- Close unnecessary browser tabs.
- Close streaming applications before making calls.
- Pause large uploads or downloads.
- Disconnect unused devices from your network.
- Work from a quiet environment whenever possible.
Additionally, disable browser extensions that may interfere with microphones or speakers.
Firewall and Network Settings
Some corporate firewalls or security appliances can affect VoIP traffic.
If you experience one-way audio, dropped calls, or registration issues:
- Verify your firewall allows VoIP traffic.
- Confirm that your organization permits real-time voice communication.
- Temporarily disconnect from your VPN to determine whether it affects audio quality.
- Contact your network administrator if restrictions are enabled.
Troubleshooting VoIP Call Quality Issues
If VoIP Call Quality becomes poor or calls sound robotic, delayed, or choppy, try the following:
- Restart your browser or DialNext desktop application.
- Restart your modem and router.
- Switch from Wi-Fi to a wired Ethernet connection.
- Test your internet connection on another network.
- Disconnect from your VPN and test again.
- Close applications that consume network bandwidth.
- Test another headset or microphone.
- Update your browser or DialNext application.
If VoIP Call Quality does not improve after completing these steps, contact the DialNext support team.
Frequently Asked Questions
Does Wi-Fi affect VoIP Call Quality?
Yes. Although modern Wi-Fi networks perform well, a wired Ethernet connection usually provides lower latency, less jitter, and more stable call quality.
How Much Bandwidth Is Required for Good VoIP Call Quality?
DialNext recommends allocating at least 100 Kbps of upload and download bandwidth for every active call.
What Is Acceptable Jitter?
For high-quality voice calls, jitter should remain below 30 ms. Higher values may result in distorted or inconsistent audio.
Can a VPN Affect VoIP Call Quality?
Yes. Some VPN services increase latency and jitter, which can negatively affect VoIP performance. Disconnect from your VPN temporarily to determine whether it is causing the issue.
Related Articles
- Browser Permissions for Calls
- Microphone & Speaker Troubleshooting
- International Phone Numbers
- Call Recording Guide
Additional Resources
You can test your internet connection using a reliable speed testing service such as Speedtest by Ookla:
Need Help?
If you’re still experiencing call quality issues after following this guide, contact our support team at help@dialnext.io.