I'm having an issue since switching to Tomato, and then TomatoUSB that I shouldn't be having and I can't figure out why.
I have VOIP service through Viatalk. Had it for years. Grandstream ATA that when using my previous router (WL-520GU) running DD-WRT sat behind the router in the DMZ, and I had no problems. I was having some other issues with DD-WRT so I flashed Tomato (not TomatoUSB). Loved Tomato, but started having problems with the VOIP service, even though I configured it to run in the DMZ again.
I bought a new router (E3000) and flashed TomatoUSB on it, still having the same VOIP issues. If I move the ATA to sit between the cable modem and the router, it works fine. If I put it back behind the E3000, it runs ok for a little while, but then the last time I turned QoS on, it stopped working again. Unfortunately turning QoS off didn't fix it, I had to move it back between the cable modem and the E3000 again to get it working, and I just left it there.
Viatalk support says there shouldn't be any issues running Tomato. Other people have said they run Tomato w/ ViaTalk and no issues.
Since running TomatoUSB I've also noticed another issue that I didn't have previously when running DD-WRT. I have an HP wireless printer (natively wireless, not hooked up to the router). Printing larger files to it wirelessly causes all sorts of problems - incomplete printing, printing garbage, printing excessively slowly. I hooked up the computer to the printer directly via USB and it works fine.
Not sure where else to go with these issues other than to flash back to DD-WRT and see if the problems go away. Anyone else see anything like this? Two different routers, both running different flavors of Tomato but having similar issues?