I have two call managers and about 30 sites. I have one of the call managers configured as a conference bridge. I have a media resource group configured with the call manager bridge resource. I have a MRGL configured for each site that contains the MRG. For each device pool I have the appropriate MRGL. At one site when the user goes to place a conference call by hitting the Confrn softkey the call is placed but as soon as the caller that the conference call was placed to answers that call it's disconnected. All of the other sites I have tested this with have no issues. Any one have any suggestions?