Cisco Systems UBR7100E manual Fixed Interface Units, Ethernet/Fast Ethernet LAN Interface

Chapter 1 Product Overview

Fixed Interface Units

Instructions for installing the router on a tabletop, installing the router in an equipment rack, and attaching the cable-management bracket are given in Chapter 3, “Installing Cisco uBR7100 Series Universal Broadband Routers.”

Fixed Interface Units

The Cisco uBR7100 series universal broadband router contains the following fixed interfaces:

•Ethernet/Fast Ethernet LAN Interface, page 1-6

•RF Cable Interface, page 1-6

Ethernet/Fast Ethernet LAN Interface

The Cisco uBR7100 series contains a fixed LAN Ethernet/Fast Ethernet autosensing interface with two separately routable 100BASE-TX ports. Both ports support full-duplex and half-duplex operation, and automatically determine whether the attached network is a 10-Mbps 10BASE-T Ethernet or a 100-Mbps, 100BASE-TX Fast Ethernet network. Each port uses an RJ-45 connector with Category 5 unshielded twisted-pair (UTP) wiring.

RF Cable Interface

The Cisco uBR7100 series router includes a fixed cable interface card that provides one downstream port and from one to four upstream ports, depending on the model.

On the Cisco uBR7111 and Cisco uBR7114 routers, the cable interface supports the North American DOCSIS channel plan, with a 6 MHz National Television Systems Committee (NTSC) channel width, with a 5 to 42 MHz upstream frequency range. The downstream supports the 54 to 858 MHz frequency range with 64 QAM and 256 QAM data rates, while the upstream supports QPSK and 16 QAM data rates.

On the Cisco uBR7111E and Cisco uBR7114E routers, the cable interface supports the EuroDOCSIS channel plan, with an 8 MHz pulse amplitude modulation (PAM) and SECAM channel width, with a

5 to 65 MHz upstream frequency range. The downstream supports the 54 to 858 MHz frequency range with 64 QAM and 256 QAM data rates, while the upstream supports QPSK and 16 QAM data rates.

Two downstream connectors are provided:

•DS0 RF—Outputs the downstream after it has been processed by the router’s integrated upconverter, thereby creating an RF signal suitable for connection to a combiner and transmission on the coaxial cable network.

•DS0—Outputs the downstream as an IF signal, requiring an external upconverter to process the signal for output on the coaxial cable network.

Note On the Cisco uBR7111E and Cisco uBR7114E routers, the DS0 connector is automatically muted when the DS0 RF port is enabled.

Cisco uBR7100 Series and Cisco uBR7100E Series Universal Broadband Router Hardware Installation Guide

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