Has anyone successfully used any other routers besides the 3 they sell?
If so, please use this forum to update the tested ones.
EVEN IF THEY DON'T WORK!

- Linksys RTP300:
Doesn't work. It played a message telling me my phone may be in the wrong port. I got this router years ago from Vonage.

If this list gets long enough, I will put together a Matrix of routers tested.