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      How to disable SIP ALG for Sonicwall Routers

      Instructions on how to disable SIP ALG for Sonicwall Routers

      Note: that this process will reboot your router - which will temporarily take your internet connection and phone service offline. 

      We recommend doing this in an off-peak period or outside of business hours.

      Disabling SIP ALG for Sonicwall Routers

      1. From the Sonicwall main menu, select VoIP, then choose 
      2. Find the setting for SIP (or SIP transformations) and uncheck the box, then check Enable consistent NAT and choose save.
      3. If you are prompted to reboot, please do so.