Can't hear anything

Hi all.
I’m using Asterisk 1.2.2-1. It was installed few days ago. Everything was correct, but at this morning I can’t hear anything from my recipient and recipient can’t hear me. I’m using alaw, gsm, g729 codecs and this trouble I have with any codec.
I hear signals “busy”, “call” etc. and asterisk is working.
Can anybody to help with this problem.
Thanks anyway

maybe there are some ploblem of 1.2.2 .
use 1.2.1

Thanks for answer. Problem was corrected.

Both svn 1.2 and trunk are now updated with a fix for this problem. If you want to patch your own server without upgrading, there’s a fix available in the bug tracker, issue 6349.