Cisco ONS 15454 SDH Specifications Page 177

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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 3 Card Reference
OC48 LR/STM16 LH AS 1550 Card
The OC48 LR/STM16 LH AS 1550 port features a 1550 nm laser and contains a transmit and receive
connector (labeled) on the card faceplate. The card uses SC connectors, and it supports 1+1
unidirectional protection and provisionable bidirectional and unidirectional switching.
The OC48 LR/STM16 LH AS 1550 detects LOS, LOF, LOP, MS-AIS, and MS-FERF conditions. Refer
to Chapter 1, “Alarm Troubleshooting,” for a description of these conditions. The card also counts
section and line BIT errors.
3.23.1 OC48 LR/STM16 LH AS 1550 Card-Level Indicators
The OC48 LR/STM16 LH AS 1550 card has three card-level LED indicators.
3.23.2 OC48 LR/STM16 LH AS 1550 Port-Level Indicators
You can find the status of the OC48 LR/STM16 LH AS 1550 card ports using the LCD screen on the
ONS 15454 SDH fan tray assembly. Use the LCD to view the status of any port or card slot; the screen
displays the number and severity of alarms for a given port or slot. Refer to Chapter 1, “Alarm
Troubleshooting,” for a complete description of the alarm messages.
Table 3-16 OC48 LR/STM16 LH AS 1550 Card-Level Indicators
Card-Level LEDs Description
Red FAIL LED The red FAIL LED indicates the card’s processor is not ready. This LED is
lit during Reset. The FAIL LED flashes during the boot process. Replace the
card if the red FAIL LED persists.
Green ACT LED The green ACT LED indicates that the OC48 LR/STM16 LH AS 1550 card
is carrying traffic or is traffic-ready.
Yellow SF LED The yellow SF LED indicates a signal failure or condition such as LOS, LOF
or high BERs on one or more of the card’s ports. The Yellow SF LED also
illuminates when the transmit and receive fibers are incorrectly connected.
When the fibers are properly connected and the link is working, the light
turns off.
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