3Com 5500G Getting Started Manual page 10

10 Chapter 2: OSN|M Hardware Overview
LEDs
Interface
Specifications
There are PWR, SYS, HDD, and management Ethernet port LEDs on the
front panel of an OSN|M. Table 1 describes the four LEDs.
Table 1 The OSN|M front panel's LED descriptions
LED Color
PWR Green
SYS Green/Red
HDD Green
LED for the Green/Yellow
management
Ethernet port
Console port
The console port on the OSN|M's front panel conforms to the EIA/TIA-232
asynchronous serial port specifications. You can use the console port to
log into and then configure the OSN|M's Linux system. Refer to Table 2
for the console port specifications.
Table 2 Console port specifications
Specification
Connector type
Number of connectors
Status Function
Green, solid Normal
ON
Green, The module is being loaded.
blinking
OFF The module is powered off.
Green, solid CPU bus is busy
ON
Red, solid ON CPU bus fails.
OFF CPU runs normally.
Green, Hard disk is reading/writing.
blinking
OFF Hard disk does not perform any
operation.
Green, solid 100-Mbps connection is
ON established.
Green, 100-Mbps connection is
blinking established and data is being
received/transmitted; Active
Yellow, solid 10-Mbps connection is
ON established.
Yellow, 10-Mbps connection is
blinking established and data is being
received/transmitted; Active
OFF No connection is established.
Description
RJ45
1