Users can dial in to their boxes and check messages and work inside their mailbox all day long. But as soon as someone tries to leave a message, it disconnects. Disconnects are either abrupt or you sometimes hear the system say "Good bye" and then it drops you. Messages last from 3 seconds to 60 seconds. We have an Octel 100 with 12 inbound lines connected to a Centrix System. The phone company uses a Nortel DMS 100. We've even gone as far as purchasing a new system to end up with the same results. We've got the SMDI link working so the octel can tell who is calling, but leaving messages still won't function correctly. Any help would be greatly appreciated.