Cisco Cisco IOS Software Release 12.1(3)EC

This feature module describes the spectrum management enhancements in the Cisco uBR-MC16S cable 
modem card for Cisco uBR7200 series universal broadband routers running 
Cisco IOS software Release 12.1(3a)EC1.

This document includes the following sections:

The Cisco uBR-MC16S spectrum management cable modem card helps you reduce the negative effects 
of upstream ingress noise by performing a spectrum analysis of available upstream channels, and 
selecting an upstream channel with appropriate signal quality. The Cisco uBR-MC16S delivers 
hardware-assisted spectrum management, resulting in better service, quality, and reliability.

To use the spectrum management feature, you must install the Cisco uBR-MC16S cable modem card in 
the Cisco uBR7246 VXR. For installation information, see the Cisco uBR7200 Series Universal 
Broadband Router Hardware Installation Guide, Release 12.1.

The spectrum management card in Cisco uBR-MC16S cable modem scans the upstream spectrum for 
clean (usable) channels of the specified width: 3.2 MHz, 1.6 MHz, 800 KHz, 400 KHz, and 200 KHz. 
If the card does not find acceptable channels of the specified width, it scans the upstream spectrum for 
the next largest available channel width. The spectrum management card enables the 
Cisco uBR-MC16S cable modem get live data samples of the upstream frequency spectrum.