Specifications

4-65
Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 4 Card Reference
OC12 LR/STM4 LH 1310 Card
4.21 OC12 LR/STM4 LH 1310 Card
The OC12 LR/STM4 LH 1310 card provides one long-range, ITU-T G.707, ITU-T G.957, and
Telcordia-compliant, GR-253 SONET OC-12 port per card. The port operates at 622.08 Mbps over a
single-mode fiber span. The card supports VT and non-concatenated or concatenated payloads at STS-1,
STS-3c, STS-6c or STS-12c signal levels. Figure 4-23 shows the OC12 LR/STM4 LH 1310 faceplate
and a block diagram of the card.
Note The OC12 LR 1310 and OC12 LR/STM4 LH 1310 cards are functionally the same.
Figure 4-23 OC12 LR/STM4 LH 1310 faceplate and block diagram
You can install the OC12 LR/STM4 LH 1310 card in any multispeed or high-speed card slot and
provision the card as a drop card or span card in a two-fiber BLSR (Bidirectional line switched ring),
UPSR, or ADM (linear) configuration.
The OC12 LR/STM4 LH 1310 card port features a 1310 nm laser and contains a transmit and receive
connector (labeled) on the card faceplate. The card uses SC optical connections supporting 1+1
unidirectional and bidirectional protection.
uP bus
uP
Flash
RAM
BTC
ASIC
STS-12
Mux/
Demux
Optical
Transceiver
OC-12
Main SCI
Protect SCI
STS-12
B
a
c
k
p
l
a
n
e
61354
FAIL
ACT
SF
OC12LR
STM4LH
1310
1
33678 12931
Tx
Rx