I'm trying to set up my iPhone 5S for hands-free telephony in my 4th Generation CR-V for the first time. My iPhone 5S pairs with the Connect system Bluetooth with no problems for music playback. It transfers the phone book. It can make calls. However when the outgoing call connects there is NO AUDIO. An "In Call" screen is displayed with "Private Mode" displayed, together with a speaker icon with a slash through it, and a "Transfer" button illuminated. "Touchtones", "Mute" and "Hang Up" are greyed-out. I suspect there's a box I haven't ticked somewhere, on phone or HFT. Can anyone help, please?