Cisco Headend Digital Broadband Delivery System Release Notes

 

8 

4002628 Rev B 

Before you upgrade to GoQAM 1.1.2, be sure that your system meets the criteria 
specified in System Release Compatibility and Prerequisites (on page 2) and Cisco 
Application Platform Release Dependencies (on page 2). 

If you will not be downloading the GoQAM software from the Cisco File Transfer 
Protocol (FTP) site, make sure that you have obtained the CD, GoQAM Software 
V1.1.2, part number 4011024. 

 

When upgrading GoQAMs with the new software, consider the following tasks and 
the amount of time required for each: 

 

Completing pre-upgrade tasks takes from 30 to 45 minutes. 

 

If you are upgrading from an FTP site, allow an additional 10 to 15 minutes to 
download the software from the FTP site. The speed of the connection and the 
size of the files will determine the actual download time. 

 

Downloading new software to the GoQAM takes approximately 5 minutes for 
each modulator. 

 

For GoQAMs that carry broadcast sessions, the DNCS will restart the sessions 
after the GoQAMs load new software. 

 

For GoQAMs that carry VOD sessions, only those sessions that are determined to 
be active will be restarted. Because subscribers may tune away when the 
GoQAM reboots, the total number of recovered sessions may not match the 
original number of sessions on the GoQAMs. 

Note: It is not necessary to rebuild non-VOD sessions on the GoQAMs that you 
upgrade. The non-VOD sessions are rebuilt automatically after the new software is 
downloaded to the GoQAM. 

 

When GoQAMs are reset (rebooted) during the upgrade, the services they carry are 
interrupted. DHCTs will show a frozen picture or black screen until the upgrade is 
complete and the DNCS has restarted all of the active sessions on the GoQAM.