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7 August 2003
Chapter 1 Cisco ONS 15530 Overview
Cisco ONS 15530 Components
1-18
Cisco ONS 15530 Hardware Installation Guide
78-14228-02
OSC Module LEDs
Table 1-4 lists the LEDs on the OSC module faceplate, their default conditions,
and what the conditions indicate.
PSM
The PSM (protection switch module) provides trunk fiber protection for Cisco
ONS 15530 systems configured in point-to-point topologies. The PSM sends the
DWDM signal from the OADM module to both the west and east directions. It
receives both the west and east signals and selects one to send to the OADM
module. When a trunk fiber cut occurs on the active path, the PSM switches the
received signal to the standby path. Since the PSM occupies one of the OADM
subslots in the shelf, it protects a maximum of four channels and the OSC in a
single shelf configuration.
The PSM also has an optical monitor port for testing the west and east receive
signals. This port samples one percent of these signals which can be monitored
with an optical power meter, or optical spectrum analyzer.
A PSM can be installed in subslots 0/0 and 0/1 of the Cisco ONS 15530 chassis.
The PSM for the Cisco ONS 15530 has a front panel with four MU connector
pairs, as shown in Figure 1-13.
Table 1-4 OSC Module LEDs
LED Status Description
STATUS Green OSC module initialization process is complete.
Yellow OSC module is in initialization process.
TX Green Transmit laser is enabled.
RX Green Light reception exists at wave OSC interface.