FaceTime losing audio
Hi,
I regularly talk to my Dad overseas via Facetime. He has a macbook air previous gen. running snow leopard with latest facetime version installed from the app store. I typically use my iPad, but at times use my iMac/Macbook. It seems to be happening on a regular basis now that after talking with him for maybe 30 minutes I will suddenly not be able to hear him although he can still hear me. The solution is I tell him to quit his facetime and reopen it and call me back and it works again. On my end I'm running the latest software/OS on all my devices. Any idea what this issue can be? Thanks,
rc