HP Remote Assistant Card - Manual (Page 46)

2 Hardware Installation and Configuration
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Using an External Modem
You can communicate with remote consoles by connecting an external modem via the
board's serial communications port. A modem connection at the remote console is
required to complete the data link. The following figure illustrates this type of
connection joining the server and the remote console.
Figure 2-14. Remote Connection Through an External Modem
NOTE HP recommends that you supply power to your external modem from an
Uninterruptible Power Supply (UPS) so that you can be notified in case of a
server power failure.
You can use an external modem with the models of the HP Remote Assistant that
incorporate an on-board modem (Models D2968C and D2969C). However, if you plan
to use this type of configuration, you'll need to override the on-board modem using the
HP Remote Assistant Configuration Utility. See Chapter 2 for more information on
setting up communications with the Utility and Appendix B for a list of modems
supported for use with HP Remote Assistant.