Problem with Nokia E90 when making and receiving calls.

[austom]

I have recently signed up to Voxalot and use PennyTel as my VSP. I have configured Voxalot on my Nokia E90 as per the instructions on the Voxalot website.
I have then made some internet calls through my mobile using Voxalot and I have noticed that the call goes through but I am not able to hear the ring on the other side or the other person speaking. But the other side, when the call is answered, can hear me very well. I have also received a call via my SIP URI and it's the same story again; I can not hear the person calling me but the person calling me can hear me.
Is there something in the settings that I need to change?
I have downloaded Fring and have put the Voxalot settings in th Fring app and making outgoing calls works fine. Is there somthing in the Nokia E90 setting that I need to change? Please help.