Facetime doesnt Alert me iPhone 4

I have this same issue. I can facetime my friend and he receives it just fine. If he tried to facetime me (and this is just facetime, no actual phone call happening)there is absolutly no indication of a call. The only way i know is theres a missed call notification in phone. Very annoying.
Unibody MBP 15" and Custom PC i7 930, 12gb ram, 160gb intel SSD g2, 2x GTX260 iOS 4

Make that 3, but not consistently. I can call my husband and it always works but his success rate to me is around 30%
imac Mac OS X (10.5.7)

I had this same problem. Powering phone off and back on resolved it for me.
Applez

Oddly enough, I had my iPhone charging this morning. It was about at 99% when the phone rang and it was a facetime call. But I did power my phone off and on last night thinking it might solve a different issue. So perhaps that did the trick. Good luck, all!
iPhone iOS 4

Similar issue. If i hit facetime from the contact it starts a facetime call and it is never seen, but if i call the person normally and then click facetime it works . .
 MacBook Pro;  MacPro; TV;  iPhone4;  iPod Mac OS X (10.5.1) Intel Core 2 Duo - 2.4 GHz