FaceTime on Mac hangs up on Yosemite
I'm on Yosemite OSX 10.10 on a Mid 2009 Macbook Pro. When I attempt to call another apprx. 3-year old iMac, also running Yosemite OSX 10.10, or try to receive calls from that same iMac to my MacBook Pro, the calls go through, only to be hung up, immediately.
I can call between said iMac and my iPhone 5 running iOS 8.0.2 or a 2-gen. iPad. Only the calls between the Macs won't stay online.
A solution, anyone, would be greatly appreciated.
Thank you
MacBook Pro, OS X Yosemite (10.10)