We've got Cisco SPA514G phones with the BLF sidecar. I've set some of them to shared park spots 1-4. If I blind transfer and then press one of the spots, it lights up and the call is placed in the spot. I can press the button again and pick it back up. But, I can't dial *11 to pick up spot 1 if I used the sidecar. It gives me "Invalid number." The same thing happens in reverse: If I blind transfer and dial *01, it will park the call, but the BLF won't light up, and I can't use it to pick up the parked call. I can dial *11 and it will pick it up. How can I get this to work consistently?