After the initial installation, the Guardian window displays all TT Gateways with which Guardian has established communications.
For example, you have a LIFFE and Eurex gateway and your workstation establishes a connection to all Eurex Gateways but not to the LIFFE Gateway, the first time you open the Guardian window, only the Eurex exchange displays. Once you establish a connection to the LIFFE Gateway, the Guardian display updates to include the LIFFE exchange.
When Guardian starts to receive status reports from the TT Gateways, it retains its awareness of the existence of the gateway. In the event that the connection is lost, Guardian will continue to display the gateway.