Communication Test Packet: When you use this option, the Fabric Manager establishes a connection with the Unisys Support Center and sends the ESRDIAG packet. A successful communication is acknowledged with a SACK, and an unsuccessful communication is marked as Failed. If the information within the packet cannot be fully validated, a NACK is displayed.

For more information on SACK and NACK events, see Understanding Events.

For information on how to test and verify the connectivity using the communication test packet, see Testing Call Home Connectivity Using Communication Test Packet Option.

Ready for Use Test Packet: When you use this option, the Fabric Manager user interface establishes the connection with the Unisys Support Center and sends the ESRRFU packet that validates the system style, serial number, and address information entered in the Customer Information tab.

For information on how to test and verify the connectivity using the ready for use test packet, see Testing Call Home Connectivity Using Ready for Use Test Packet Option.