Doubt Regarding " SCO over PCM "

Hi All
I have the following doubts regarding "SCO ove PCM" with BlueZ ;
I configure configured SCORouting=PCM in /etc/blueooth/audion.conf and
connected to head set

1) if check "hcitool con" there is no SCO connection  and sound is
routing to local PCM
     Is this behavior is correct ?

2) With the same configuration if I use Skype ; there is a SCO
connection and audio is not routing to local PCM
     Does any body tried SCO over PCM using Skype.

I am using pulse audio 0.9.21 . please help me

Thanks