Specifications

4-71
Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 4 Card Reference
OC48 IR 1310 Card
4.23 OC48 IR 1310 Card
The OC48 IR 1310 card provides one intermediate-range, Telcordia-compliant, GR-253 SONET OC-48
port per card. Each port operates at 2.49 Gbps over a single-mode fiber span. The card supports VT and
non-concatenated, or concatenated payloads at STS-1, STS-3c, STS-6c, STS-12c, or STS-48c signal
levels. Figure 4-25 shows the OC48 IR 1310 faceplate and a block diagram of the card.
Figure 4-25 OC48 IR 1310 faceplate and block diagram
You can install the OC48 IR 1310 card in any high-speed card slot and provision the card as a drop or
span card in a two-fiber or four-fiber BLSR, UPSR, or in an ADM (linear) configuration.
The OC-48 port features a 1310 nm laser and contains a transmit and receive connector (labeled) on the
card faceplate. The OC48 IR 1310 uses SC connectors. The card supports 1+1 unidirectional and
bidirectional protection switching.
The OC48 IR 1310 detects LOS, LOF, LOP, AIS-L, and RDI-L conditions. See Chapter 1, “Alarm
Troubleshooting” for a description of these conditions. The card also counts section and line BIT errors.
uP bus
uP
Flash
RAM
BTC
ASIC
Optical
Transceiver
OC-48
Main SCI
Protect SCI
STS-48
61356
Mux/
Demux
B
a
c
k
p
l
a
n
e
FAIL
ACT
SF
OC48
IR
1310
1
33678 12931
Tx
Rx