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40 Avaya CMS Sun Ultra 5 Computer Hardware Installation, Maintenance, and Troubleshooting
Connecting the serial port expander box
To connect serial devices to the Ultra 5, you can use a Serial Asynchronous Interface/PCI
(SAI/P) expander box. The SAI/P card is used to connect terminals, printers, and modems
to the computer. Each SAI/P card is shipped with an expander box that attaches to the
SAI/P card and breaks out eight RS232 serial ports (see the figure below). There can be
up to two SAI/P cards and expander boxes on each Ultra 5.
SAI/P card
u5_saip_box.cdr
SAI/P expander
box