I have been using Norstar Voice Mail Manager ver 4.0 for PC access to the Voice mail system over our LAN and it has worked great and is much easier to use than the phone keypad. For some reason out of the blue I now receive “Error communicating with server” when trying to access the voice mail across the LAN. I can ping the I.P. address of the voice mail server and it responds, but it will not let me connect. I switched out cables, checked all configurations with no prevail. Does anyone know what could have happened to break the communication when all has been good? Just looking to see if there is a bug, fix, upgrade or network change I need to make. Any help would be appreciated. Thanks