Bluez for HFP

Hi,
How to test the HFP profile in bluez , [VOIP softwares like skype or any other VOIP solutions]. Any member using this Profile kindly write a small how to test the HFP feature.

I am using bluez4.6 . should i also install anyother software apart from Bluez Software to make VOIP[For VOIP should can i use Skype ?] calls via HandsFree Headset.
thanks & regards,
Regards,
sm

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