3Com NETBuilder II Installation Manual page 13

Appendix A
HSSI Module Components
This appendix describes the HSSI module components and gives the specifications of the
board. The following figures show the major components and the connector/LED panel.
Backplane
connector
to NETBuilder II
LEDs
The following table explains the states of the three LEDs.
Table A-1. LED states
LED
TX
CA
STATUS on
HSSI
®
Normal Color
Behavior
on green
on green
green
off
yellow
red
TX
CA
Indicates
packets forwarding
CSU available
normal operation
module disabled
self-test
fault
Status LED
CA LED
TX LED
Connector
STATUS