I'm trying to add a .au file to the MoH options for the UC520. The help guide said to drag and drop the file into the topology, yet when I try this, I get the error "Drag and drop is not supported on multiple devices."  Is there any way to either fix...

Phone Model: SPA504GWhen receiving an incoming call, the phone rings and the open line light flashes green. When I pick up the phone handset, the active line light turns red for a few seconds, then goes out. I don't hear anything, nor can the incomin...

Phone Model: SPA504GWhen receiving an incoming call, the phone rings and the open line light flashes green. When I pick up the phone handset, the active line light turns red for a few seconds, then goes out. I don't hear anything, nor can the incomin...