I am running CUCM 6.1.3. I am having an issue with one-way audio with my meet-me conferencing. It is random. One time it works and the next it does not. I am pretty baffled. We upgraded to 6.1.3 and thought that had resolved the issue. That was six months ago and it has started again. My users can hear the outside call but they can't here us. I can switch to another Meet-Me number and it works f Because it is so random it is very difficult to determine issue.