Small problem with public RDP (wodVPN)

Is there a way to debug this?
I can't telnet to that port, but it seems it have to do with AOL, we are using aol proxy on the internal network pc to connect to internet, do you have any experience with this?
So we setup the same wodVPN on a pc that use a router to access the internet and it works, so it seems that aol is blocking the UDP packets or something,can a mediator solve this problem or is the same?

Or can we use regular TCP packets to connect?

Thanks