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Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
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Chapter2 Preparing the Cisco uBR7225VXR Router for Installation
Provisioning the Cable Headend
•One or more accessories boxes (some or all might be shipped separately)
Step2 Check the contents of the accessories box against the “Component Checklist” and the packing slip to
verify that you received all listed equipment, which should include the following:
•One modular power cable for an AC-input power supply. (If you purchased a Cisco uBR7225VXR
router with a redundant power supply, you should receive two power cables.)
•One rack-mount and cable-management kit (3 brackets and 14 mounting screws).
•Optional equipment that you ordered, such as network interface cables, transceivers, or special
connectors.
•CNR or CSRC provisioning documentation, or both.
•Cisco IOS software documentation, if ordered.
Step3 Verify that the number of cableinterface line cards installed in your Cisco uBR7225VXR router matches
the number of cable interface line cards that you ordered.
Step4 Refer to Appendix G, “Site Log,” then to the “CiscouBR7225VXR Router Chassis Rack-Mounting
Options” section on page3-2 to begin the installation.
Provisioning the Cable Headend
This section describes the necessary preparations to make at the cable headend before you install the
Cisco uBR7225VXR universal broadband router.

Two-Way Data and VoIP

To prepare for two-way data operation, including digitized voice and fax, ensure that the following
conditions are met:
•The cable headend equipment is properly aligned and certified for two-way transmission based on
procedures provided by the manufacturers of the equipment and in accordance with DOCSIS or
EuroDOCSIS RF Interface Specifications.
•The cable headend is wired for narrowcast downstream data transmission.
•The cable headend is wired to supply an RF feed from the upstream fiber-optic receivers to the
Cisco uBR7225VXR router.
•Upstream frequencies are allocated for data transmission.
•Upstream impairments are measured and understood, and comply with recommendations in
DOCSIS or EuroDOCSIS RF interface specifications.
•Upstream ports are configured as appropriate to support frequency agility.
•Downstream frequencies are assigned.
•Internet connectivity is established.
•Internet addresses are obtained and allocated.
•All RF connectivity is verified.