The DOCSIS-based Cisco uBR905 and Cisco uBR925 cable access routers give small office, home
office (SOHO) and branch office subscribers high-speed Internet or intranet access.The Cisco uBR905
and Cisco uBR925 cable access routers act as cable modems to connect computers and other customer
premises devices at a subscriber site to the service provider cable, hybrid fiber-coaxial (HFC), and IP
backbone network.

The Cisco uBR905 cable access router supports data traffic via a shared two-way cable system and IP
backbone network. The Cisco uBR925 cable access router supports both data and Voice over IP (VoIP)
traffic via a shared two-way cable system and IP backbone network.

Both cable access router models support four Ethernet hub ports to connect to PCs and other customer
premises equipment (CPE) devices. The Cisco uBR925 cable access router also supports connecting one
PC or CPE device through a Universal Serial Bus (USB) port.

The Cisco uBR905 and Cisco uBR925 cable access routers are based on Data-over-Cable Service
Interface Specifications (DOCSIS) and interoperates with any bidirectional, DOCSIS-qualified cable
modem termination system (CMTS). These cable access routers ship from the Cisco factory with a
Cisco IOS software image stored in nonvolatile Flash memory that supports DOCSIS-compliant
bridging data operations.

Based on the feature licenses your company purchased, other Cisco IOS images can be downloaded from
Cisco.com. Special operating modes, based on your service offering and the practices in place for your
network, can be supported for the Cisco uBR905 and Cisco uBR925 cable access routers, based on the
available images in Cisco IOS Release 12.2(15)CZ3. Both the Cisco uBR905 and Cisco uBR925 cable
access routers can also function as an advanced router, providing WAN data connectivity in a variety of
configurations.

Cisco uBR905 Cable Access Router

The Cisco uBR905 cable access router features a single F-connector interface to the cable system, four
RJ-45 (10BASE-T Ethernet) hub ports to connect to a local PC or LAN, and one RJ-45 console port to
connect to a laptop computer/console terminal for local Cisco IOS configuration. The Cisco uBR905
router also provides an onboard IPSec hardware accelerator, which provides high-performance
encryption that is substantially faster than software-based encryption.