Who this is for / When to use
This guide is for Kyrios users experiencing unclear audio, delays, dropped calls, or echo during voice or video calls on desktop or mobile.
Why call quality is poor or choppy
Poor call quality is usually caused by insufficient internet speed, high latency, or unstable network conditions.
To fix this:
Run an internet speed test.
Confirm the connection meets minimum requirements:
Download: 50 Mbps or higher
Upload: 50 Mbps or higher
Ping: under 40 ms
Jitter: under 10 ms
If results are below these thresholds, restart the router or upgrade the internet plan.
How to test internet speed and call readiness
Internet speed tests help confirm whether the network can support real-time calls.
To test:
Visit speed.cloudflare.com.
Run the full speed test.
Review download, upload, ping, and jitter results.
Retest after switching networks or restarting the router if results are poor.
What high jitter means and how to fix it
High jitter means data packets are arriving at inconsistent intervals, causing crackling or robotic audio.
To reduce jitter:
Switch from Wi-Fi to a wired Ethernet connection.
Move closer to the router if Wi-Fi is required.
Disconnect other devices using heavy bandwidth.
Enable Quality of Service (QoS) on the router to prioritize voice traffic.
What packet loss is and how to resolve it
Packet loss occurs when voice data fails to reach its destination, causing missing audio or dropped calls.
To fix packet loss:
Visit test.8x8.vc to check VoIP compatibility.
Close bandwidth-heavy applications such as streaming or downloads.
Update router firmware.
Replace outdated or low-quality routers if issues persist.
What high RTT (latency) means and how to fix it
High round-trip time (RTT) causes noticeable delays between speaking and hearing responses.
To reduce RTT:
Use a faster or more stable internet connection.
Avoid VPNs or proxy services during calls.
Close background applications consuming bandwidth.
Contact the internet provider if latency remains consistently high.
How to diagnose call issues using a WebRTC test
WebRTC tests check microphone, camera, network, and connectivity readiness for calls.
To run a test:
Open the WebRTC troubleshooting tool.
Click Start.
Confirm microphone, camera, network, and throughput all pass.
Resolve any failed or warning indicators before retrying calls.
How to prevent call quality issues on mobile devices
Mobile call quality issues are usually caused by weak signals or network switching.
To improve mobile call quality:
Check for in-app warnings such as high jitter or packet loss.
Move to a location with stronger Wi-Fi or cellular signal.
Disable background apps using data.
Switch networks and retry the call if issues persist.
Why calls drop frequently and how to prevent it
Dropped calls are caused by unstable connections, congestion, or router instability.
To prevent dropped calls:
Use a wired connection when possible.
Limit downloads and streaming during calls.
Restart the router regularly.
Avoid network switching during active calls.
Why echo occurs and how to fix it
Echo happens when a microphone picks up sound from speakers.
To fix echo:
Use wired or Bluetooth headphones.
Lower speaker volume.
Ensure only one microphone and speaker are active.
Confirm correct audio devices are selected in system settings.
Common issues and fixes
Problem: Robotic or delayed audio
Fix: Reduce jitter by using wired internet and closing background apps.Problem: Audio cuts in and out
Fix: Check for packet loss and network congestion.Problem: Echo or feedback
Fix: Use headphones and verify audio device settings.