For some strange reason when I place my VOIP ATA (Sipura 2102) behind my router it will work fine for a day or two and then the ATA phone line(s) will quit working. The Line 1 registration has a status of failed. My VOIP provider is VOIPYourLife and they have been unable to help me. It works fine when I place the ATA between my modem and router, but the ATA limits my download speed. Hereâ€™s the kicker, they have granted me admin access to their ATA device so I can go in and change the SIP mapping at will when the connection fails. Iâ€™ll change the SIP port from 5060 to 5061 and bingo, everything works again for a day or two. I have port forwarding set for ports 5004, 5060-5069 and 16384-16482 (VYL recommended) on my WRT54GL. Are there any settings in the Tomato firmware that would help ? Any ideas/suggestions would greatly be appreciated.