user manual

4-20
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 4 Optical Cards
4.7.2 OC12 IR/STM4 SH 1310-4 Card-Level Indicators
Note If you ever expect to upgrade an OC-12/STM-4 ring to a higher bit rate, you should not put an
OC12 IR/STM4 SH 1310-4 card in that ring. The four-port card is not upgradable to a single-port card.
The reason is that four different spans, possibly going to four different nodes, cannot be merged to a
single span.
4.7.2 OC12 IR/STM4 SH 1310-4 Card-Level Indicators
Table 4-8 describes the three card-level LED indicators on the OC12 IR/STM4 SH 1310-4 card.
4.7.3 OC12 IR/STM4 SH 1310-4 Port-Level Indicators
You can find the status of the four 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 the Cisco ONS 15454 SDH Troubleshooting Guide
for a complete description of the alarm messages.
4.8 OC48 IR/STM16 SH AS 1310 Card
The OC48 IR/STM16 SH AS 1310 card provides one intermediate-range, ITU-T G.707- and
G.957-compliant, SDH STM-16 port per card. The interface operates at 2.488 Gbps over a single-mode
fiber span. The card supports concatenated or nonconcatenated payloads at STM-1, STM-4, or STM-16
signal levels on a per VC-4 basis. Figure 4-11 shows the OC48 IR/STM16 SH AS 1310 faceplate.
Table 4-8 OC12 IR/STM4 SH 1310-4 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 ACT LED The green ACT LED indicates that the card is carrying traffic or is
traffic-ready.
Amber SF LED The amber SF LED indicates a signal failure or condition such as LOS, LOF,
MS-AIS, or high BER 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 links are working, the light turns off.