Cisco Headend Digital Broadband Delivery System Release Notes

 

4002628 Rev B 

v 

 

This document provides the following information and procedures for upgrading a 
Gigabit Overlay Quadrature Amplitude Modulation (GoQAM) to GoQAM software 
version 1.1.2: 

 

Chapter 1 provides a description of new features and improvements that this 
software version offers, including change requests (CRs) implemented in this 
release.  It also lists the requirements for upgrading a GoQAM modulator with 
GoQAM software version 1.1.2. 

 

Chapter 2 provides step-by-step instructions for installing GoQAM software 
version 1.1.2 onto a GoQAM modulator. 

 

Chapter 3 provides general information for contacting Cisco. 

 

Appendix A includes procedures for verifying if you have the install tool on the 
DNCS and also includes instructions for retrieving the tool, if needed. 

 

Appendix B includes procedures for loading multiple versions of GoQAM code 
into one system. 

 

Appendix C provides a procedure for backing out of this upgrade should it not 
succeed for some unforeseen reason. 

Important: This version of GoQAM software supports PowerKEY® encryption and 
the following devices: 

 

Radio frequency (RF) GoQAM 

 

Intermediate frequency (IF) GoQAM 

Note: The RF GoQAM is a software-modified Model D9477-1 Gigabit QAM (GQAM) 
Modulator. The IF GoQAM (Model D9477-3) is similar to the RF GoQAM, but does 
not require or contain RF cards, and it has a different back panel. Both are integral 
components of Cisco's Overlay™ solution. 

 

This document enables system operators to perform the following tasks: 

 

Upgrade the GoQAM Modulator with GoQAM software version 1.1.2. 

 

Roll back to earlier versions of GoQAM software in the unlikely event that a site 
encounters problems after upgrading the software.