3-44
Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 3 Card Reference
OC12 IR/STM4 SH 1310 Card
The OC12 IR/STM4 SH 1310 card interface features a 1310 nm laser and contains a transmit and receive
connector (labeled) on the card faceplate. The OC12 IR/STM4 SH 1310 card uses SC optical
connections and supports 1+1 unidirectional and bidirectional protection.
The OC12 IR/STM4 SH 1310 detects LOS, LOF, LOP, MS-AIS, and MS-FERF conditions. Refer to
Chapter 1, “Alarm Troubleshooting,” for a description of these conditions. The card counts section and
line BIT errors.
To enable MSP, the OC12 IR/STM4 SH 1310 extracts the K1 and K2 bytes from the SDH overhead and
processes them to switch accordingly. The DCC bytes are forwarded to the TCC-I card, which terminates
the DCC.
3.19.1 OC12 IR/STM4 SH 1310 Card-Level Indicators
The OC12 IR/STM4 SH 1310 card has three card-level LED indicators.
3.19.2 OC12 IR/STM4 SH 1310 Port-Level Indicators
You can find the status of the OC12 IR/STM4 SH 1310 card port 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 3-12 OC12 IR/STM4 SH 1310 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 OC12 IR/STM4 SH 1310 card is
operational and is carrying traffic or is traffic-ready.
Yellow SF LED The yellow SF LED indicates a signal failure or condition such as LOS, LOF,
MS-AIS 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.
Comments to this Manuals