Call Quality Issues (Jitter, Latency)

Overview

Audio quality problems during calls — including choppy audio, echo, delay, or one-way audio — are often caused by network issues.

Common Audio Issues

Symptom	Likely Cause	Solution
Choppy/robotic audio	High jitter or packet loss	Use wired connection, enable QoS
Long delay (latency)	High network latency	Check internet speed, reduce hops
Echo	Acoustic feedback	Use headset, reduce speaker volume
One-way audio	NAT/firewall blocking RTP	Open RTP ports, disable SIP ALG
No audio	Firewall blocking all media	Open required ports

Recommended Network Settings

• Bandwidth: Minimum 100 kbps per concurrent call
• Latency: Under 150ms round-trip
• Jitter: Under 30ms
• Packet Loss: Under 1%
• QoS: Prioritize SIP/RTP traffic on your network

Quick Diagnostics

1. Run a speed test to check bandwidth
2. Run a ping test to the SIP server to measure latency
3. Try a wired Ethernet connection instead of Wi-Fi
4. Test with a different codec if available

Related Articles

• Why Can't I Make or Receive Calls?
• System Health Monitor