I just moved an Electra Elite 192 with a FMS voicemail system. Everything seems to work fine as far as I'm concerned. The customer is complaining that when you call in via the autoattendant and dial an extension, intermittently the caller is just dropped. I remember seeing this when the VM was trying to transfer you to an extension that does not have a phone connected but, the phones are connected in this case.

Is there anything I should check. I can't duplicate the problem, so I'm at a loss.

is there a mailbox associated with the phone? there has to be a mailbox (or tbox) to transfer the call out of the vm.