# 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.

![image](../../_static/images/firewall/fusionpbx_cisco_linksys.jpg)
