Specifications

4-77
Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 4 Card Reference
OC48 IR/STM16 SH AS 1310 Card
4.25 OC48 IR/STM16 SH AS 1310 Card
The OC48 IR/STM16 SH AS 1310 card provides one intermediate-range SONET/SDH OC-48 port
compliant with the International Telecommunication Union’s G.707, G.957, and Telcordia’s GR-253.
The 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 4-27 shows the OC48 IR/STM16 SH AS 1310 faceplate and a block diagram of the card.
Figure 4-27 OC48 IR/STM16 SH AS 1310 faceplate and block diagram
You can install the OC48 IR/STM16 SH AS 1310 card in any multispeed or high-speed card slot on the
ONS 15454 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/STM16 SH AS 1310 uses SC connectors. The card supports 1+1
unidirectional and bidirectional protection switching.
The OC48 IR/STM16 SH AS 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
61357
Mux/
Demux
B
a
c
k
p
l
a
n
e
FAIL
ACT
SF
TX
1
RX
OC48IR
STM16SH
1310
AS