[cisco-voip] UCCX call hold problem

[Malcolm Caldwell]

Hello,

I am running CUCM6.1 and UCCX 5.

I have a problem where sometimes, occasionally, when the call centre
agents put a caller on hold, when they go to resume the call there is
one way audio.  The agent can still hear the caller but the caller
cannot hear the agent.

This happens infrequently but has been happening for a few months.  I
know this will be hard to diagnose since it does not happen every time.

Has anyone else seen this?