That was the same way it was with the Mogul. You could hear yourself loud and clear, but the other party was very muted. IIRC, I was told it was a limitation of the hardware since it couldn't fully record in full duplex, what it was recording was like a reverb of the original voice.
Now that I think about it more, I am pretty sure it was the Mogul, not the Tp1 which suffered from this problem...
http://www.sprintusers.com/forum/sho...d.php?t=155340