Recording & reports
Network Quality: test if your connection is good enough for calls
Run a self-serve VoIP readiness test that measures latency, jitter, packet loss and a call-quality score (MOS), and check our connection servers are reachable.
Which plans include it
Included on every plan, including the Free Trial.
What it means
A speed test built for phone calls. Calls need a steady connection more than a fast one, so it measures the things that cause choppy or robotic audio.
What it does
- Measures latency, jitter and packet loss.
- Gives a MOS call-quality score from 1 to 5.
- Checks the STUN and TURN servers that help calls through routers are reachable.
- Keeps a history of tests.
Every part of the page
- Run Network Test
- Measures your connection now ("Measuring latency & jitter…", "Scoring call quality…").
- Latest Result
- Latency (ms), Jitter (ms), Packet Loss and MOS.
- Platform STUN / TURN Reachability
- Whether our connection helpers are reachable. TURN relays audio on strict networks.
- Test History
- Date, MOS, Latency, Jitter, Loss and Down/Up for past tests.
How to use it
Diagnose choppy calls
- Run Network Test where you make calls (same Wi-Fi).
- Compare with the guide: MOS 4+ excellent, latency under 150 ms, jitter under 30 ms, loss under 1%.
- If poor: move closer to the router or use a cable, pause big downloads, and test again.
- Send the result to support if it stays poor.
Examples
Before you switch
Run the test at the office: latency 25 ms, jitter 3 ms, packet loss 0%, MOS 4.3 — good for clear calls.
Poor result
MOS 2.9 and 4% packet loss over Wi-Fi? Run it again on a cable, or ask your broadband provider about the line, before blaming the phone system.
Recommended settings
- ★Test at your busiest time of day.
- ★A wired connection beats Wi-Fi for desk phones.
- ★Good targets: MOS 4.0+, latency < 150 ms, jitter < 30 ms, packet loss < 1%.
Abbreviations on this page
- MOS — Mean Opinion Score
- A call-quality score from 1 (unusable) to 5 (perfect). 4.0 or more is excellent; under 3.5 people will notice problems.
- Example: A MOS of 4.2 is good call quality; below 3.5 people start to notice.
- Latency — Latency (ms)
- How long your voice takes to reach the other end, in milliseconds. Under 150 ms feels natural.
- Example: 30 ms latency is fine; over 150 ms you start talking over each other.
- Jitter — Jitter (ms)
- How unevenly the pieces of your call arrive. Under 30 ms is good; high jitter sounds choppy or robotic.
- Example: Jitter of 3 ms is fine; 40 ms makes speech choppy.
- Packet loss — Packet loss (%)
- The share of call audio that never arrives. Under 1% is good; above 3% causes gaps.
- Example: 1% packet loss is barely noticeable; 5% makes words drop out.
- STUN — Session Traversal Utilities for NAT
- A helper server that tells your phone its public internet address so calls can connect through your router.
- Example: STUN lets your softphone find its public internet address so calls connect through your router.
- TURN — Traversal Using Relays around NAT
- A relay server that carries call audio when a strict router or firewall would otherwise block it.
- Example: If your office firewall blocks direct audio, a TURN server relays it so the call still works.
- NAT — Network Address Translation
- What your router does to share one internet address between all your devices. It is the usual cause of one-way audio.
- Example: Your router uses NAT so every device in the office shares one internet address.
- ms — Milliseconds
- Thousandths of a second.
- Example: 150 ms is 0.15 of a second.
Questions
What is a good MOS score?+
4.0 or above is excellent, 3.5–4.0 is fine, below 3.5 callers will notice problems.
My speed test is fast but calls are bad.+
Calls depend on jitter and packet loss, not download speed. This test measures those.
Related help
Already a customer? Open this page in your dashboard: Network Quality. New to Silux Call? See the plans or start a free trial.