Ok I have been battling with this for a while. The VERY IMPORTANT thing to note here is that if you want to use skype, axon, and uplink on the same windows pc, you have to change the TCP port in Uplink on which to listen for incoming connections. If you don't Axon will try to connect to itself for outgoing calls.
So just like above, where it says to put in your private ip address and then the port, like 192.168.1.2:5070.
I am still not getting this to completely work yet - skype says it is dialing, but the test number isn't ringing.