FIOS will not work if you had 2 videophone. If you have MVP and VP200, it will not work at all. I tried to help my friend who has FIOS and he has MVP and VP200. I tried everything by putting port forwarding in router and still not work. My friend did called to order for additional IP address, but they only give him business IP address and it cost more. They only gave him only one IP address for FIOS. I struggled to get it work for both but still not work at all. We did called support services both Sorenson and Purple communication and they had no clue about FIOS. FIOS looks like it is new to them.