Connecting Cisco ATM Network Modules to the Network
ATM OC-3 Network Modules
10
Connecting Cisco ATM Network Modules to the Network
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 17. Supported platforms are:
• Cisco 3825 integrated services router
• Cisco 3845 integrated services router
Figure 17 ATM OC3-POM Network Module
The ATM interface is the small form-factor pluggable (SFP) optical port labeled ATM 0. See Figure 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 5 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
TXCLRXCLRXCR
CLASS 1 LASER PRODUCT PRODUCT LASER DE CLASSE1
LASERPRODUCT DER KLASSE 1 PRODUCTO LASER CLASE 1
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