bluez/android HFP auto connect

Hi,

  I am working with bluez-5.30.

I have two systems, after pairing with one linux system Fedora 20,
when press call button connection establishes and AT commands are
coming. Everything seems fine.

Where I have other system - after paring, when I hold call button no
handsfree is connection request come. But When I manually connect AT
commands come, again for VOICE recognition if I hold button AT+BVRA is
not coming.

Both are loaded with same 5.30, is there any kernel configuration I
particularly need to enable.

manyThanks,
Prabhu