Datasheet

4-6
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 4 Optical Cards
4.2.1 OC3 IR 4/STM1 SH 1310 Functionality
4.2.1 OC3 IR 4/STM1 SH 1310 Functionality
You can install the OC3 IR 4/STM1 SH 1310 card in Slots 1 to 6 and 12 to 17. The card can be
provisioned as part of a subnetwork connection protection (SNCP) ring or linear add-drop multiplexer
(ADM) 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 card detects loss of signal (LOS), loss of frame (LOF), loss of pointer
(LOP), multiplex section alarm indication signal (MS-AIS), and multiplex section far-end receive failure
(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 bit interleaved parity (BIP) errors.
To enable multiplex section protection (MSP), the OC3 IR 4/STM1 SH 1310 card extracts the K1 and
K2 bytes from the SDH overhead to perform appropriate protection switches. The data communication
channel/generic communication channel (GCC) bytes are forwarded to the TCC2 card, which terminates
the GCC.
4.2.2 OC3 IR 4/STM1 SH 1310 Card-Level Indicators
Table 4-3 describes the three card-level LED indicators on the OC3 IR 4/STM1 SH 1310 card.
4.2.3 OC3 IR 4/STM1 SH 1310 Port-Level Indicators
Eight bicolor LEDs show the status per port. The LEDs shows green if the port is available to carry
traffic, is provisioned as in-service, and is part of a protection group, in the active mode. 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.
Table 4-3 OC3 IR 4/STM1 SH 1310 Card-Level Indicators
Card-Level LED Description
Red FAIL LED The red FAIL LED indicates that the card 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 card 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.