Check network quality for calls

Know the numbers that make calls sound good.

Poor latency, jitter or packet loss makes calls choppy.

Steps

Aim for one-way latency under 150 ms.
Aim for jitter under 30 ms.
Aim for packet loss under 1%.
Use your phone system's call quality reports, or a ping test to your provider, to measure these.

More Troubleshooting guides

Work through the usual causes of Register Failed or a missing line.

Calls connect but someone can't hear. Usually a router or firewall problem.

Give phone calls priority on your network.

Check your internet can handle your calls.

Keep phones on their own network segment.

Protect against toll fraud and hacking.