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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 4 Optical Cards
4.4.1 OC12 IR/STM4 SH 1310 Card-Level Indicators
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 the
Cisco ONS 15454 SDH Troubleshooting Guide for a description of these conditions. The card also
counts section and line BIP errors.
To enable an MSP-SPRing, the OC12 IR/STM4 SH 1310 extracts the K1 and K2 bytes from the SDH
overhead to perform appropriate protection switches. The GCC bytes are forwarded to the TCC2 card,
which terminates the GCC.
4.4.1 OC12 IR/STM4 SH 1310 Card-Level Indicators
Table 4-5 describes the three card-level LED indicators on the OC12 IR/STM4 SH 1310 card.
4.4.2 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 the CiscoONS15454SDH
Troubleshooting Guide for a complete description of the alarm messages.
4.5 OC12 LR/STM4 LH 1310 Card
The OC12 LR/STM4 LH 1310 card provides one long-range SDH STM-4 port per card compliant with
ITU-T G.707, and ITU-T G.957. The port operates at 622.08 Mbps over a single-mode fiber span. The
card supports VC-4 and nonconcatenated or concatenated payloads at STM-1 and STM-4 signal levels.
Figure 4-6 shows the OC12 LR/STM4 LH 1310 faceplate.
Table 4-5 OC12 IR/STM4 SH 1310 Card-Level Indicators
Card-Level LED Description
Red FAIL LED The red FAIL LED indicates that the card’s processor is not ready. The FAIL
LED is on during reset and flashes during the boot process. Replace the card
if the red FAIL LED persists.
Green/Amber ACT LED The green ACT LED indicates that the card is operational and is carrying
traffic or is traffic-ready. The amber ACT LED indicates that the card is in
standby mode or is part of an active ring switch (BLSR).
Amber SF LED The amber 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 amber
SF LED is also on if the transmit and receive fibers are incorrectly
connected. If the fibers are properly connected and the link is working, the
light turns off.