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Chapter 11
Connecting ATM Network Modules
ATM OC-3 Network Modules
ATM OC-3 network modules provide full 155-Mbps ATM connectivity, including STS-3c and STM-1
framing, for high-bandwidth data applications and voice-data integration applications. Characteristics
and installation of these modules are described in the following sections.
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OC-3 Network Modules for Cisco 3600 and Cisco 3700 Series Routers
This section describes the following OC-3 (Optical Carrier level 3) network modules for most
Cisco 3600 and Cisco 3700 series routers.
ATM OC-3 network modules are not supported by the Cisco 3631 router.
Note
The following modules are supported on the Cisco 3600 series routers and the Cisco 3725 router:
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The following modules are supported on the Cisco 3745 router:
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The following modules are supported on the Cisco 3600 series routers:
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Circuit emulation service allows the network module to carry voice traffic, such as telephone calls and
faxes, over an ATM network simultaneously with data traffic.
If you are using the ATM OC-3/STM-1 circuit emulation service network module, you need both the
network module and a 1- or 2-port T1 or E1 multiflex trunk interface card (VWIC-1MFT-T1,
VWIC-1MFT-E1, VWIC-2MFT-T1, VWIC-2MFT-E1, VWIC-2MFT-T1-DI, or VWIC-2MFT-E1-DI)
for a voice connection. You can install one multiflex trunk interface card (providing up to two voice
OL-2485-20
OC-3 Network Modules for Cisco 3600 and Cisco 3700 Series Routers, page 11-5
ATM-OC3-POM Network Module for Cisco 3800 Series Routers, page 11-10
Laser Safety Guidelines, page 11-13
Fiber-Optic Transmission Specifications, page 11-14
NM-1A-OC3MM provides a multimode (MM) fiber uplink port. See
NM-1A-OC3SMI provides a single-mode intermediate-reach (SMI) fiber uplink port. See
Figure
11-8.
NM-1A-OC3SML provides a single-mode long-reach (SML) fiber uplink port. See
NM-1A-OC3MM-EP provides an MM fiber uplink port with enhanced performance. See
Figure 11-7
for a similar faceplate.
NM-1A-OC3SMI-EP provides an SMI fiber uplink port with enhanced performance. See
Figure 11-8
for a similar faceplate.
NM-1A-OC3SML-EP provides an SML fiber uplink port with enhanced performance. See
Figure 11-9
for a similar faceplate.
NM-1A-OC3MM-1V provides an MM fiber uplink port and circuit emulation service. See
Figure
11-10.
NM-1A-OC3SMI-1V provides an SMI fiber uplink port and circuit emulation service. See
Figure
11-11.
NM-1A-OC3SML-1V provides an SML fiber uplink port and circuit emulation service. See
Figure
11-12.
Figure
Cisco Network Modules Hardware Installation Guide
ATM OC-3 Network Modules
11-7.
Figure
11-9.
11-5
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