Due to the age of this system with its unsupported OS, I am moving the network connections to a DMZ on the firewall to segregate it from the rest of the network. I changed the IP addresses of each of the CPS and EM (voicemail) systems. Now, when I try to connect using Inter-Tel System Manager, I receive the following error: "The CP node you are connecting to has been programmed to have a voice mail unit attached which may contain local applications. The connection to the Voice Mail unit has failed. Would you like to disconnect Voice Mail?". I am also seeing a System Alarm 203. I'm guessing that the IP address of the Voice Mail system is defined somewhere on the CPS?