How to Disable SIP ALG in Ubiquity Unifi
Learn how to disable the SIP ALG feature in your Ubiquity Unifi router for better VoIP call quality.
Written by Thomas Gipson
Updated at June 29th, 2023
Table of Contents
Note that, as this process may temporarily interrupt your internet connection and phone service, we recommend doing this in an off-peak period or outside of business hours.
For EdgeRouter setup with EdgeMax user interface please see Disable SIP ALG - EdgeRouter
Ubiquiti (USG/UBNT/UNIFI User Interface)
- Go to Routing & Firewall
- Go to the Firewall tab
- Click Settings
- Set SIP to Off
- Set H.323 to Off
Disabling SIP ALG for Ubiquiti EdgeRouter (EdgeMax CLI/Command Line Interface)
You can perform this change from the command line by logging in, then entering the following commands:
# from ssh <username>@192.168.x.x or Unifi/UNMS terminal
$ configure
$ set system conntrack modules sip disable
$ commit
$ save
$ exit(Here's what the CLI commands look like)