[OpenSER-Users] One way audio calling a -> b, two way audio calling b -> a with two phones behind the same NAT

Hi, I am having some trouble with nat traversal. Depending on which phone is originating the call, it may either have one way audio, two way, or even neither. Here is the matrix I have tested so far. Hardphone to hard phone works fine between two spa942 or either of the spa942 phones and the budgetone, the problems come into the picture when soft phones are used. caller callee RTP direction budgetone linphone neither budgetone spa942 both budgetone xlite both linphone budgetone one way linphone spa942 one way linphone xlite neither spa942 budgetone both spa942 linphone neither spa942 xlite one way xlite budgetone both xlite linphone both xlite spa942 both Openser.cfg http://pastebin.ca/946561