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Cisco uBR924 Router Hardware Installation Guide
OL-0338-01 (3/2000)
Chapter 1
Product Overview
Features
Caution
In certain countries, the provisioning of voice telephony over the Internet or use of these
products may be prohibited and/or subject to laws, regulations or licenses, including
requirements applicable to the use of the products under telecommunications and other
laws and regulations; customer must comply with all such applicable laws in the country
where the customer intends to use the product.
Features
The Cisco uBR924 cable access router is a compact, easy-to-install device that contains:
•
A single F-connector interface to the cable system.
•
Four RJ-45 (10BaseT Ethernet) hub ports to connect up to four computers directly to the Ethernet
hub ports at the rear of the unit (depending on the Cisco IOS release). Alternatively, one of the four
ports can connect to an Ethernet hub which then can connect additional computers or devices at the
site. (The actual number of supported CPE devices depends on the Cisco IOS release; see the
“Routing and Bridging” section on page 1-2 for details.)
•
Two RJ-11 Foreign Exchange Station (FXS) ports to connect telephones and fax devices to the
cable system and IP backbone; the router ships from the Cisco factory with the voice ports disabled.
Note
To enable the voice ports, use a Cisco IOS Release 12.0(4)XI or higher image that
supports VoIP and configure the router according to your business practices and network
configuration. To support fax, use a Cisco IOS Release 12.0(5)T or higher image that
supports VoIP and configure the router as appropriate. Also configure the CMTS and
related servers. See the Cisco uBR924 Cable Access Router Software Configuration Guide
for examples of configuration files.
•
One RJ-11 port to connect to a standard, analog telephone line (optional) to provide a backup Plain
Old Telephone Service (POTS) connection to the Public Switched Telephone Network (PSTN)
should the Cisco uBR924 cable access router lose power.
•
One RJ-45 console port (optional) to connect to a laptop PC or console terminal when locally
configuring the router; the router ships from the Cisco factory with the console port enabled.
Note
By default, downloading a Cisco IOS configuration file disables the console port and
erases all previously saved configurations. This default behavior is recommended as it
prohibits configuration access at the remote site.
Figure 1-5 depicts the front of the Cisco uBR924 cable access router. Figure 1-6 shows the rear of the
unit.
