Connecting the iphone with the PS, to have music, telephone, and fading music to hear a call, is very easy. Just use a three connector wire and it will do both stereo music and telephone from the front jack.
At first, i made myself a four to three wire, with an inline switch, to switch from music to telephone, since the iphone is four connector and the 8000b three, but finally the iphone does the switching by itself. No need for a special wire.
The music play in stereo, fade for a call to be replaced by the ring, you answer the call on the iphone, push the TEL button on the PS, and you are online. After the call, to return to stereo music, just repush the TEL button.
I am now back to my generation one Bose from the Zulu iphone pairable. Pretty amazed that the iphone can take care of switching the mic to left stereo by itself, from a four connector jack to a three connector plug. Sound quality of the PS Engineering is just perfect, music or phone.
Louis