user manual

4-25
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 4 Optical Cards
4.9.1 OC48 LR/STM16 LH AS 1550 Card Functionality
Figure 4-14 shows a block diagram of the card.
Figure 4-14 OC48 LR/STM16 LH AS 1550 Block Diagram
4.9.1 OC48 LR/STM16 LH AS 1550 Card Functionality
You can install OC48 LR/STM16 LH AS 1550 cards in Slots 1 to 6 or 12 to 17. You can provision this
card as part of a MS-SPRing or SNCP. In an ADM/TM configuration, you can provision the card as either
an access tributary or a transport span interface.
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 the Cisco ONS 15454 SDH Troubleshooting Guide for a description of these conditions. The card also
counts section and line BIP errors.
4.9.2 OC48 LR/STM16 LH AS 1550 Card-Level Indicators
Table 4-10 describes the three card-level LED indicators on the OC48 LR/STM16 LH AS 1550 card.
uP bus
uP
Flash
RAM
BTC
ASIC
Optical
Transceiver
STM-16
Main SCI
Protect SCI
STM-16
63119
Mux/
Demux
B
a
c
k
p
l
a
n
e
Table 4-10 OC48 LR/STM16 LH AS 1550 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.