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