11-10
Cisco Network Modules Hardware Installation Guide
OL-2485-20
Chapter 11 Connecting ATM Network Modules
ATM OC-3 Network Modules
Note
A single fiber link should not mix 62.5- and 50-micron cable.
ATM-OC3-POM Network Module for Cisco 3800 Series Routers
The NM-1A-OC3-POM network module provides a high-performance fiber uplink port for Cisco 3800
series integrated services routers. See
Figure 11-17
. Supported platforms are:
•
Cisco 3825 integrated services router
•
Cisco 3845 integrated services router
Figure 11-17 ATM OC3-POM Network Module
The ATM interface is the small form-factor pluggable (SFP) optical port labeled ATM 0. See
Figure 11-17
. The optical interface is provided by an SFP module that is inserted into the SFP port.
Fiber-optic cables to the network are attached to the SFP module.
The network module has three modes of operation. The mode of operation is determined by the SFP
module that is used.
Caution
Only SFP modules provided by Cisco should be used in the network module. SFP modules that are not
provided by Cisco have not been evaluated for reliability or user safety.
The modes of operation and usable SFP modules are:
•
Multimode (MM)
–
POM-OC3-MM
Table 11-6
Fiber-Optic Cable Specifications
Standard
Maximum Path Length
Cabling
ISO/IEC 9314-3
1.24 miles (2 km) all cables
in a connection, end to end
62.5-micron core with an
optical loss of 0 to 9 dB, or
50-micron core with an
optical loss of 7 dB
IEC 793-2
27.9 miles (45 km) for SML
and 9.3 miles (15 km) for
SMI
9-micron core
ANSI/TIA/EIA-492
CAAA
27.9 miles (45 km) for SML
and 9.3 miles (15 km) for
SMI
9-micron core
EN
ATM
NM-1A-OC3-POM
127722
RXALM
ATM 0
TXCL
RXCL
RXCR
CLASS 1 LASER PRODUCT
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