HP 9000 V2600 SCA - Manual (Page 121)

Chapter 5 99
Configuration utilities
SSP-to-system communications
Serial communications
The DUART port on the SCUB provides an RS232 serial link to the SSP.
Through this port HP-UX, OBP, POST (Power-On Self Test) and the Test
Controller send console messages. The SSP processes these messages
using the
sppconsole and ttylink utilities and the consolelogx log
file. POST and OBP also send system status to the LCD connected to the
DUART. For more information on
sppconsole , ttylink , and
consolelogx , see the appropriate man pages.
NOTE The second RS-232 port on the workstations are unused and not enabled
at this time.