voice over-ride in conversation

[JoeFargo]

When in a voice conversation with someone, they can't hear me if they are talking. I want to be able to interrupt them, but as long as they are talking, they can't hear me. It is very annoying, to say the least when you can't interrupt someone's long winded conversation. What's with this? It was this way with my Droid 1 and now with the Droid X.

HELP!!