XPCat was mucking around one day and he got video chat working in 7.5 (i had to do it on an alt account, my main didn’t work for some reason). I recall opening a port on my router to get it to work
OK. Ports are: 5004 (UDP) for videochat, and 6981 (TCP) for voicechat
Hope this helps.
(If it doesn’t work, try making an alt account and logging on from there)