Cisco 3825 Hardware Installation Guide - Page 181
ATM OC-3 Network Modules, OC-3 Network Modules for Cisco3600 and Cisco3700 Series Routers
UPC - 746320981505
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Chapter 11 Connecting ATM Network Modules ATM OC-3 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. • 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 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. Note ATM OC-3 network modules are not supported by the Cisco 3631 router. The following modules are supported on the Cisco 3600 series routers and the Cisco 3725 router: • NM-1A-OC3MM provides a multimode (MM) fiber uplink port. See Figure 11-7. • 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 Figure 11-9. The following modules are supported on the Cisco 3745 router: • 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. The following modules are supported on the Cisco 3600 series routers: • 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. 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 Cisco Network Modules Hardware Installation Guide 11-5