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Cisco uBR7100 Series and Cisco uBR7100E Series Universal Broadband Router Hardware Installation Guide
OL-5916-01
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.