I have two merlin magix connected by a T1, using a single voice mail, merlin Msg 2.5. The merlin Magix that has the voice mail is an R2.2 and the other is an R4.0. The phones that are connected to the switch with the voice mail display the number of new and old messages on the display phones. The phones in the second switch do not. everthing else seems to work. Can the phones in the second switch also display the voice mail info? If so What am I missing.