HP A9834-9001B - Manual (Page 34)

Chapter 1
Overview
Utilities Subsystem
34
HUCB
The HUCB, shown in Figure 1-4, is the backplane of the utility subsystem. It provides cable distribution for
all the utility signals except the clocks. It also provides the customer LAN interface and serial ports. The SMS
connects to the HUCB. The system type switch is located on the HUCB. This board has no active circuits. It is
not hot-swappable.
Figure 1-4 HUCB