calls to 500 & 600 when using alternate SIP ports
 

I am testing against us.voxalot.com, but problem may affect other clusters as well. As I mentioned in one of my previous postings; when registered on an alternate port, such as 80, SIP packets for calls to 500 and 600 (and possibly other numbers) are moved to port 5060 in mid-call. Of course the call ends prematurely at that point if port 5060 is blocked by ISP. Will this problem be fixed soon?