How do I configure optimal DoS Defense settings to eliminate “skips” and “jitters” in VoIP conversations?

Configuring DoS Defense settings on the router can eliminate any “jitters” or “jumps” in VoIP conversations.

Access the router configuration page, then click Firewall -> DoS Defense. ENABLE every option EXCEPT for the option labelled UDP Flood Defense. Leave that option DISABLED.

Refer to the screenshot below for an example.