Environmental - Cisco uBR924 Installation Manual

Site Requirements
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Note
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Environmental

Table 2-1 lists the operating and nonoperating environmental site requirements for operation of the
Cisco uBR924 router. The ranges indicate the minimum and maximum values allowed for the router's
operation, but if a measurement approaches the minimum or maximum of a range, it could indicate a
potential problem. You can maintain normal operation by anticipating and correcting environmental
anomalies before they approach a maximum operating range.
Cisco uBR924 Router Hardware Installation Guide
2-4
Ensure that all required headend routing and network interface equipment is installed, configured,
and operational. Ensure that DHCP, Cisco IOS images, and configuration files have been created
and pushed to appropriate servers such that each Cisco uBR924 router, when initialized, can
transmit a DHCP request, receive an IP address, obtain TFTP and TOD server addresses, and
download a configuration file (and/or updated software image) in compliance with DOCSIS and the
procedures in place for your network.
Ensure that each subscriber site meets the operating requirements specified in the "Site
Requirements" section.
Ensure that all supported equipment at a subscriber site—PC(s), telephone(s), fax device(s) and/or
Ethernet hub—is installed and operational. Ensure telephones at subscriber sites support
touch-tone dialing.
Verify that all PCs at all subscriber locations meet the minimum computing requirements, that
TCP/IP and DHCP operating modes are enabled, and that Internet connectivity is set for the
Ethernet interface. See the "PC Subsystem" section on page 4-9 for procedures to verify TCP/IP
and DHCP PC settings when onsite.
Each service provider will have its own recommendations and requirements for the CPE devices
connected to its network. However, at the very minimum a PC should have a 33 MHz 486 processor
(a 75 MHz Pentium or greater processor is recommended); 16 MB of RAM; Windows for
Workgroups for 486-based PCs and Windows 95 (or higher) for Pentiums; an Internet browser; an
installed Ethernet Network Interface Card (NIC), with TCP/IP networking software installed and
DHCP enabled.
This recommendation is for Internet access in general and is not specific to the
Cisco uBR924. Other operating systems and hardware platforms of comparable
capability are also supported.
Ensure that you bring sufficient cables to connect all devices at all subscriber locations. For
simultaneous TV and computer usage at a subscriber site, obtain cable splitters and directional
couplers as appropriate to install when you install the router.
Ensure the subscriber has ordered the backup POTS line(s) as appropriate from the telephone
company and that an RJ-11 modular jack (USOC code) is installed near the location to connect to
the router. The phone line should be a regular voice grade line or equivalent. Obtain each customer's
telephone number onsite and verify the voice jack.
As applicable for testing or reconfiguration based on your network practices, obtain IP addresses
and/or telephone numbers pertinent to your network from your system administrator if you are
statically configuring the subscriber site and voice dial peer groups. For most networks, IP
addresses are supplied automatically. To test VoIP functionality at each site, obtain a special dialing
number from your system administrator.
Chapter 2 Preparing for Installation
OL-0338-01 (3/2000)