Will the HTC One support seamless call handoff from OTA to WiFi calling and vice versa? If so what setup is required?

I have a HTC One now for about 2 weeks. It's a great phone! Replaced my HTC Sensation 4G.

I'm using WiFi calling quite a lot and it is very reliable. But I have not been able to get the seamless handoff of a call from OTA network to WiFi network and vice versa? Is this supported on the HTC One? And if so what setup is required?  (Setup either in the phone or the Wireless Router)

Thanks in advance!

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