Nope, horrible at it! I can focus in on one thing to the exclusion of all else though, like when I read, it takes a raised and irate or impatient voice to interrupt me, although the phone will break successfully through my attention, but that is about all.
I am a sound sleeper too. I sleep through thunder storms even, but again, the phone will wake me. I am not sure why this all is, because I can sleep through an alarm clock or wake just enough to turn it off and go right back to sleep again. But the phone? I'm up. That's it, no going back to sleep after a phone call.