Lync Server 2010 Deployment Guide Update

We are working on deploying Lync in our firm and currently only have the FE servers LB with the f5.

 

 

When a user dials in for a conference and is asked to enter a conference ID; once they do sometimes it goes through and finds it fine. majority of the time there is a 8-10 sec delay and it occasionally can find it but usually after a delay we see a failure with a system message usually stating "sorry but I’m having trouble accessing the system"

 

 

Has anyone seen this? We have our f5 Field Engineer looking into it but currently we are not sure what is going on. I also have a support ticket open with some traces.

 

 

Thanks!