IOS 8 and OS X Yosemite have been officially pushed, and FaceTime applications in OS X Yosemite are now supporting dialing and answering calls. As for how to do it, it is the use of iOS 8 iphone through the iphone's cellular connection to transfer the phone. The number of calls you make from your Mac is no different from what you call on your iphone. So how exactly do you want to operate?
To use the iphone cell phone feature, your iphone and Mac must use the same icloud account to login to FaceTime. You must also make sure that both devices use the same Wi-Fi network. This is important, or you won't be able to dial or answer the phone.
On the iphone, make sure your iphone cellular phone switch is open on the settings →facetime. On the MAC also please open the iphone cell phone switch on the FaceTime preferences panel. To dial the phone, open the FaceTime application, enter the phone number, click the Phone button. If a call comes in, click the Answer button to answer it.
For Mac users, the future of the iphone cell phone function will play a more important role. It further blurs the dividing line between Mac and iOS. I wonder if you've experienced the iphone cell phone function? How does it feel?