hi, I have a WM 6.5 phone (toshiba TG01) and am trying to connect it with 2005 X5

pairing goes ok
phonebook transfer ok
incoming call rings, but no audio on either side
outgoing call seems to be the same (I do not hear it ringing, but been told by the party that it rings) - no audio
random disconnect is an issue as well
no sms transfer

if anyone managed to get it working between WM 6.5 and BMW ULF please help