Cisco ONS 15454 SDH Specifications Page 160

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Cisco ONS 15454 SDH Troubleshooting and Maintenance Guide, R3.3
May 2002
Chapter 3 Card Reference
OC3 IR 4/STM1 SH 1310 Card
Figure 3-27 OC3 IR 4/STM1 SH 1310 faceplate
You can install the OC3 IR 4/STM1 SH 1310 card in any multispeed or high-speed card slot. The card
can be provisioned as part of a SNCP or in an Add/drop multiplexer/terminal monitor (ADM/TM)
configuration. Each interface features a 1310 nm laser and contains a transmit and receive connector
(labeled) on the card faceplate. The card uses SC connectors.
The OC3 IR 4/STM1 SH 1310 card supports 1+1 unidirectional and bidirectional protection switching.
You can provision protection on a per port basis.
The OC3 IR 4/STM1 SH 1310 detects LOS, LOF, Loss of Pointer (LOP), Multiplex Section Alarm
Indication Signal (MS-AIS), and Multiplex Section Far End Receive Failure (MS-FERF) conditions.
Refer to Chapter 1, “Alarm Troubleshooting,” for a description of these conditions. The card also counts
section and line bit interleaved parity (BIP) errors.
To enable automatic protection switching (APS), the OC3 IR 4/STM1 SH 1310 extracts the K1 and K2
bytes from the SDH overhead to perform appropriate protection switches. The DCC bytes are forwarded
to the TCC-I, which terminates the DCC.
3.18.1 OC3 IR 4/STM1 SH 1310 Card-Level Indicators
The OC3 IR 4/STM1 SH 1310 card has three card-level LED indicators.
1
33678 12931
Tx
Rx
2
Tx
Rx
4
Tx
Rx
3
Tx
Rx
63107
FAIL
ACT
SF
OC3IR
STM1SH
1310
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