Cisco EA6500

This guide was created using a Cisco EA6500 (Linksys AC1750) series router.

How to Disable SIP ALG

Log into the router and navigate to Connectivity -> Administration -> Application Layer Gateway

Uncheck the following to disable SIP ALG:

  • Enable SIP ALG

Click the Apply button at the bottom of the page. A reboot should not be necessary, but if you’re still experiencing issues then it is a good idea to try rebooting the router and testing again.