1. Browse to in a web browser.

2. Use admin username and password which should be found on the routers label. (Unless it was changed by a device admin at your company)

3. Click the Firewall tab in the left-hand column and set the firewall level to Maximum. If there is a save/apply option, please click that.

4. Click on the ALG tab in the left column.

5. Click the SIP ALG option off then save/apply

The router may have to reboot. If you reboot the device, all items will lose internet until the device reestablishes its connection.