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TP Link Archer C2 - Switching off SIP ALG

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Please note: that this is for the Archer C2 hardware version 1 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.


  1. Open your web browser and navigate to 192.168.0.1 or http://tplinkwifi.net/

  2. You will be greeted by the page below:

  3. Enter the following:

    Username: admin
    Password: admin or coolideas1


    Image result for archer c2 login screen


  4. The following status page will appear once you have logged in.



  5. Navigate to Security > Basic Security on the left-hand menu.
  6. Select Disable in line with with SIP ALG.

  7. 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

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