Hi, I'm using an early 17'' MBP with Yosemite and iPhone 5 with iOS8, I am able to receive phone calls on my laptop without problem, but I can't seem to be able to start a new phone call form my Mac (it always shows call failed). I tried signing off and on iCloud in both my devices and switching iPhone Cellular calls off and on in both devices under Facetime, but no dice. I know handoff isn't supported by this model unless I change the bt/wireless card, but receiving and starting phone calls from my mac should work right? If so how can I fix this? Thanks in advance.