I have installed majikVoip on my wm6 device, connecting to 2talk. It is connecting to the seevice and I can see the phone has logged in to 2talk via the web interface. however, when I place a call, the number is dialled and connected, yet I can't hear anything.
Anyone have any ideas.. I am not sure the app is using the right codec....
It's possible that it is routing the call to speakerphone which is not recognisable on your model. I am using Port SIP (free) and audioroute (which route's the default SIP call on Windows Mobile phones from speaker to the earpiece).
Download audioroute and change the option in there from speakerphone to earpiece then dial the number.