Mic of the bluetooth handsfree doesn't work but PDA mic does

[himalaya]

I've got a XDAII, with ROM 1.72.03ESN and BTHtools 1.1.0.0 installed, and a bluetooth handsfree Speed Sound CB-BTU2, with bluetooth V1.1 Class2, installed in my car. (Without BTHtools or whith the 1.0.1.2 version the bluetooth handsfree doesn't link to the PDA)

The problem is the following: when making a phone call with the handsfree the micro that works is the PDA one, not the handsfree one. So I need to have the PDA near my mouth so people can hear me.

Any idea to resolve this problem?

Thanks in advance.