jvsempere

I've installed my Motorola handsfree in my new Allroad, an my installer says the unique integration I have between the phone and my Navigation Plus is the function "Mute" (works OK), but in the nav system there is an option called "Phone Volume". Is there anyway to "pass" the phone sound trought the nav system to have integrated too the phone volume?

Tanks in advance and sorry for my bad english.