Cisco Cisco IOS Software Release 12.1(7)CX

This feature module describes the Advanced Spectrum Management Features that are available for the 
Cisco uBR-MC16S line card in Cisco IOS software Release 12.1(7)CX1. It describes the benefits of the 
new features, the supported platforms, related documents, and new commands.

This document includes the following sections:

The Cisco uBR-MC16S cable interface line card is a card with a DOCSIS-based cable interface that 
supports one downstream and six upstreams. It incorporates a daughterboard with hardware-based 
spectrum management features that provide the following features:

Integrates a DOCSIS cable interface line card with an onboard spectrum analyzer that continuously 
analyzes the upstream spectrum quality in the DOCSIS frequency range of 5 to 42 MHz. 

Includes hardware-assisted frequency hopping, providing for more intelligent and faster frequency 
selection than software-only solutions.

Reduces the response time to ingress noise that could cause modems to drop offline. 

Eliminates blind frequency hopping by initiating frequency hops to known clean channels.