CP Gateway Configuration You must install the CP Gateway Service and configure the VistA server settings and the Gateway server settings for messaging to take place between VistA notification and ICU devices. The CP Gateway Service exists as two subsystems, one solely within VistA, and the other as a Windows service that interacts with VistA by way of the RPC Broker. For more information on configuring the CP Gateway Service, refer to the Clinical Flowsheets Installation Guide. Use Gateway Server Settings to configure the gateway to restart automatically when the computer goes down.