Please note: this guide is for the Archer C6 hardware version 2 router.This guide will walk you through switching off SIP ALG on your TP Link router.
SIP ALG is known to cause a number of issues with Cool Ideas VoIP and switching it off is always recommended.
- 
							 Open your web browser and navigate to 192.168.0.1 or http://tplinkwifi.net/
 - You will be greeted by the page below:
 - Enter the following and Log in:
Username: admin 
Password: admin or coolideas1

 - 
							The following status page will appear once you have logged in.
 - Select the Advanced tab.

 - Navigate to NAT Forwarding > ALG  on the left-hand menu.
 - Untick the Enable box in line with with SIP ALG.
 - Click on Save.

 
Your router now has SIP ALG disabled.
If you have any trouble with the above, please don't hesitate to contact our support team on 010-593-2665 or 
via mail