This scenario demonstrates how to configure multiple i5/OS® logical partitions to connect to service and support through the modem on the i5/OS logical partition and to enable the HMC to connect to service and support through its own modem. In the event the HMC modem is busy or unavailable, the HMC can use the modem on the i5/OS logical partition to connect to service and support. Or, in the event the i5/OS modem is busy or unavailable, it can use the modem on the HMC to connect to service and support.
If you are responsible for maintaining servers at your company, one of your roles might be to establish the connections within your network and to the service and support organization so that your servers can access service and support resources. For this scenario, you are using an HMC to manage your server, and your server is divided into multiple logical partitions running multiple operating systems. You want to enable the server to use the modem on the HMC or the modem on the server to connect to service and support. In the event the HMC modem is busy or unavailable, the HMC can alternatively use the modem on the i5/OS logical partition to connect to service and support.
The following figure illustrates the flow of service information and problems through the service connection to service and support.

The figure illustrates the following points relevant to this scenario:
Successful implementation of this scenario requires that all necessary hardware planning and setup tasks are complete. Additional prerequisites and assumptions are noted in the appropriate places within the configuration tasks.
You must complete the following tasks: