Cisco Model D-PCG1000 PowerKEY CAS Gateway Release Notes

 

78-738174-01 Rev B 

Upgrading the QAM Modulator With QAM Software Version 2.3.5 

2-3 

 Continued 

When upgrading QAMs to new releases of software, you must reset the QAMs in 

order for the devices to download the new software from the DNCS. When the 

software download is complete, the DNCS then recreates any broadcast sessions that 

were active on the QAMs. The DNCS also activates encryption for any secure 

services that were running on the QAMs. 
An increasing number of TVs are being manufactured and sold with QAM tuners 

that can access services which are not properly encrypted. Therefore, as a part of the 

upgrade process, we encourage you to verify that the DNCS re-establishes 

encryption for all secure services on the upgraded QAMs. This extra step ensures 

that no potentially objectionable content can be viewed inadvertently when using a 

TV that is equipped with a QAM tuner. For further assistance, refer to the following 

procedures found later in this chapter: 
• 

Verifying the Functionality of QAM Modulators That Carry Broadcast Sessions 

in the Download QAM Software Version 2.3.5 to QAM Modulators section 

• 

Sessions in the Download QAM Software Version 2.3.5 to QAM Modulators 

section