so finally i did it instead finding....
i was searching Xperia handsfree MH700 handsfree to support handsfree profile in w995.but sadly i couldn't get the handsfree in stores so i decided to give a try. first i tried nokia 5310 handsfree luckly it was working but the volume was low. so i went mobile spares shop and got a quality nokia N82 handsfree which 3.5mm jack has 4 points. and opened the MIC switch part ditched all those connection and took a old mic part of SE hpm65 and connected as below and working perfectly. if anyone want, just try it.

here we go.... connections..
Click to view attachment




keep in mind... i'm not responsibile for any damages... make sure the connection are correct... harmless for H/W.

Update:inner mic circuit pic added

Nice hacking bro..Well done..

Nice one, tough i'm not interested in headset

nice mod!!!

Nice & useful for many Thanx for sharing Kumar

Nice thing!

I want to do this with my HPM 82

Do you think it's possible to get all working?

Including the walkman-control-buttons ?

woooooowwww

great. thanx

I don't think those play/ pause, forward,rewind-volume buttons will work. Bec there's only mic line so for those controls some other lines need unless mic encode line and the firmware supports. Also I don't see any accessory suppor this feature. Also I tried n82 headset which has those controls but of course those may not be compatible. So for now only mic and answer/end buttons working.
And i'm sure we will be getting patch to support play/pause functions as in fast port.